4.0 Changelog

4.0.28 Changelog

Security

SERVER-57727 Race conditions in x509_invalid.js

Sharding

SERVER-53335 Queries, updates, and deletes with non-"simple" collations may miss documents when using hashed sharding
SERVER-54064 Sessions on arbiters accumulate and cannot be cleared out
SERVER-55648 Mongos doesn't return top-level batch-write error in case of shutdown
SERVER-59929 Unexpected slower update/insert operation base of splitchunk and moveChunk
SERVER-60654 Backport the autoSplitVector logic to v4.0
SERVER-62065 Upgrade path from 3.6 to 4.0 can leave chunk entries without history on the shards

Replication

SERVER-56096 Invariant failure in ReplicationRecoveryImpl::recoverFromOplog

Aggregation

SERVER-44484 Changestream with updateLookup uasserts on updates from before collection was sharded
SERVER-59613 $range expression should return an error if it exceeds memory limit

Storage

SERVER-45953 Exempt oplog readers from acquiring read tickets

Internals

SERVER-40486 Remove Test Lifecycle code
SERVER-53726 Platform Support: Remove RHEL6 zSeries
SERVER-53728 Platform Support: Remove SLES12 zSeries
SERVER-56326 Add a round() method to the Decimal128 class
SERVER-58104 config.system.sessions collection can end up with invalid chunks if it is dropped and re-sharded with a shard key other than _id
SERVER-58192 Use more unique_ptrs in QueryPlannerAnalysis::analyzeSort()
SERVER-59120 Create unit tests for commitChunksMerge
SERVER-59191 SPIKE: git.get_project fails to clone
SERVER-59725 Remove push task from extra RHEL 6.2 variants
SERVER-59804 Using a separate branch for YCSB in system_perf.yml
SERVER-59874 Delete stats.js on the 4.0 branch.
SERVER-59887 Reduce the change_stream_shard_failover.js test flakiness
SERVER-60290 Update Windows external auth test distribution
SERVER-60344 Action plan on lagging setFCV replicas breaking tests
SERVER-60588 $multiply incorrectly throws an error in some cases in the classic engine
SERVER-60670 Use a separate branch instead of a specific commit for TPCC
SERVER-60671 Remove dagger
SERVER-60934 Increase RSM verbosity in the test change_stream_shard_failover.js
SERVER-60961 Add exclude tags to old branches not generating multiversion_exclude_tags.yml
SERVER-60971 Remove calls to BF suggestion service
SERVER-61152 Fix lint on 4.0 branch
SERVER-61530 Provide large distro option for split tasks on SSL Amazon Linux on 4.0
SERVER-61559 Remove jepsen_register_linearizableRead from 4.0 branch.
SERVER-61791 Pin pymongo
SERVER-62164 Remove several obsoleted build variants across all stable branches
WT-6568 Fix split generation use
WT-6926 Update WiredTiger source code to include 2021 copyright notices
WT-7065 Add check for WT_DHANDLE_DEAD to assertion
WT-7135 Additional checks to detect when writing corrupted metadata
WT-7437 Upgrade documentation to doxygen 1.8.17
WT-7871 Remove comment that is no longer true
WT-7874 Remove two other stale comments

4.0.27 Changelog

Sharding

SERVER-40170 Increase the default timeout for unit-tests which schedule work through NetworkTestEnv::launchAsync

Replication

SERVER-34938 Secondary slowdown or hang due to content pinned in cache by single oplog batch
SERVER-36263 Bypassing operation validation in applyOps should require special privilege

Query

SERVER-58127 Fix benchRun() memory leak for parsing benchRun() args under exception

Storage

SERVER-40712 Clarify the behaviour of db.dropDatabase and the dropDatabase command

Build and Packaging

SERVER-54729 MongoDB Enterprise Debian/Ubuntu packages should depend on libsasl2-modules and libsasl2-modules-gssapi-mit

Internals

SERVER-53726 Platform Support: Remove RHEL6 zSeries
SERVER-53728 Platform Support: Remove SLES12 zSeries
SERVER-55649 Sharding messages being logged for non-sharded clusters
SERVER-56516 Fix undefined behaviour in parsing code for $slice projectional operator
SERVER-57642 Invariant Failure on src/mongo/db/query/plan_yield_policy.cpp 75 | Aborting
SERVER-57798 Direct user to MongoDB Compass download page when failing to install MongoDB Compass due to a connection issue using ./install_compass
SERVER-57983 Integer overflow for $range in Classic Engine
SERVER-58283 Add a new versioning file to set MONGO_VERSION and MONGO_GIT_HASH
SERVER-58402 Increase timeout of shutdown command in shutdown_primary.js
SERVER-59055 Pin oauthlib == 3.1.0 in 4.0 branch
SERVER-59074 Do not acquire storage tickets just to set/wait on oplog visibility
SERVER-59197 Delete fam image entries when the corresponding session documents are deleted
SERVER-59242 update to snmp 5.9.1
SERVER-59262 Remove burn_in_tests tasks from storeFindAndModifyImagesInSideCollection build variants
SERVER-59414 Retry curator setup in powercycle on older branches
SERVER-59504 Fix formatting in network_test_env.h on v4.0

4.0.26 Changelog

Security

SERVER-56240 Turn on checkpointing for the keystore Data Store

Sharding

SERVER-48648 Return updated ShardVersion in _configsvrCommitChunkMerge to avoid blind metadata refresh
SERVER-48653 Return updated ShardVersion in _configsvrCommitChunkSplit to avoid blind metadata refresh
SERVER-56654 Do not use the collection distributed lock for chunk splits
SERVER-56779 Do not use the collection distributed lock for chunk merges
SERVER-56786 There are three routing info refreshes and two chunk scans on the mergeChunks path
SERVER-58109 The new '_configsvrMergeChunks' path is more expensive than the old one

Replication

SERVER-44316 Log message in InitialSyncer for setting begin applying timestamp is incorrect
SERVER-55465 Fix Invariant upon failed request for a vote from the current primary in the election dry-run of catchup takeover
SERVER-56054 Change minThreads value for replication writer thread pool to 0

Query

SERVER-58127 Fix benchRun() memory leak for parsing benchRun() args under exception

Aggregation

SERVER-41741 Improve robustness of change_streams_shell_helper_resume_token.js

Build and Packaging

SERVER-50568 Platform Support: Remove Ubuntu18.04 zSeries from 5.0
SERVER-54729 MongoDB Enterprise Debian/Ubuntu packages should depend on libsasl2-modules and libsasl2-modules-gssapi-mit

Internals

SERVER-40590 Delete KeyedExecutor
SERVER-53643 Startup can see old version of featureCompatibilityVersion document
SERVER-53726 Platform Support: Remove RHEL6 zSeries
SERVER-53728 Platform Support: Remove SLES12 zSeries
SERVER-55119 Create startup warning indicating that X.509 certificates without SANs are deprecated
SERVER-55649 Sharding messages being logged for non-sharded clusters
SERVER-56307 The chunk migration "convergence algorithm" is very primitive
SERVER-56452 Self anchor in PooledLDAPConnection::setup's callback
SERVER-56501 Add op counters for legacy op codes (OP_QUERY, OP_INSERT, etc.)
SERVER-56516 Fix undefined behaviour in parsing code for $slice projectional operator
SERVER-57053 Rewriting $nor with a $text predicate to $not is invalid
SERVER-57057 Reduce routing info refreshes on the mergeChunks path
SERVER-57064 Log create index and dropIndex(es) on mongos
SERVER-57145 Invariant failure at OCSPManager::requestStatus
SERVER-57157 assert serverStatus command works in getBinVersion() jstest helper
SERVER-57275 Update kmip_server.py to be more verbose
SERVER-57328 Make ReplsetTest.upgradeSet() tolerant of reelections
SERVER-57330 Update perf yaml configs for perf and sys-perf to use perf.send
SERVER-57454 Chunk donor propagates NotMaster error from recipient back to MigrationManager making it to believe donor is not primary
SERVER-57497 store_retryable_find_and_modify_images_in_side_collection.js should account for a later clustertime in retried findAndModify responses
SERVER-57564 Increase system timeout duration to >2 hours to allow fio to copy over all files
SERVER-57691 [4.0 only] Return early in TxnResources if not in WUOW
SERVER-57798 Direct user to MongoDB Compass download page when failing to install MongoDB Compass due to a connection issue using ./install_compass
SERVER-57897 Add readPrefMode option to benchRun find/findOne ops
SERVER-57954 Update TPC-C version in sys-perf.yml
SERVER-58118 Spammy logging when RSM is refreshing all hosts
SERVER-58191 [Migrate Protocol] Allow delete_during_migrate.js to tolerate chunk migration failures due to timeout in catchup phase in slow variants.
SERVER-58248 Fix error code when checking if FeatureCompatibilityVersion is majority-committed
SERVER-58283 Add a new versioning file to set MONGO_VERSION and MONGO_GIT_HASH
SERVER-58313 Fix package test failure caused by SERVER-55460 backport to v4.2 and v4.0

4.0.25 Changelog

Sharding

SERVER-40293 change_stream.js removal test should do an unordered check on the change stream
SERVER-47699 Change yield type used by range deleter from YIELD_MANUAL to YIELD_AUTO
SERVER-56515 Chunk merge doesn't consider the incrementChunkMajorVersionOnChunkSplits parameter
SERVER-57009 Additional debugging information in case of crash during fCV change
SERVER-57055 delete_during_migrate.js is consistently failing in test suites with Code Coverage enabled
SERVER-57102 Fixing invariants on ShardServerCatalogCacheLoader to consider different terms

Write Operations

SERVER-38909 Permit empty update modifiers, treating as a no-op rather than an error

Build and Packaging

SERVER-54057 Mongodb-org-server el8 package has dependency on python2
SERVER-54386 mongodb 3.6.22 install fails if systemctl daemon is not running
SERVER-55460 Fix RPM packaging and testing for SLES 12

Internals

SERVER-37125 Powercycle should ignore a process reference if it no longer exists
SERVER-38811 TCP_KEEPINTVL should be 1 second
SERVER-43617 Add metrics on the mongos to indicate the number of shards targeted for the commands (find, aggregate, etc)
SERVER-45153 Ignore metrics temp files in FTDCFileManager
SERVER-47509 resmoke accepts multiple "mongodSetParameters" options but only uses the last one
SERVER-48636 Increase assertEventDoesNotWakeCursor getMore timeout in only_wake_getmore_for_relevant_changes.js
SERVER-48890 allow $addFields with empty document and have it be a no-op
SERVER-51465 Update package tests after compass installer update
SERVER-52610 Verify installation prefix is added to correct location in the RPM
SERVER-52833 Capped collections can contain too many documents after replication recovery
SERVER-53726 Platform Support: Remove RHEL6 zSeries
SERVER-53728 Platform Support: Remove SLES12 zSeries
SERVER-55019 install_compass does not run on all supported platforms
SERVER-56164 All performance projects use the master DSI branch
SERVER-56217 PoolForHost::_maxInUse is init to <int>::max and cannot be changed, and when connections are maxed DBConnectionPool::get() always throws
SERVER-56361 Better FTDC diagnostics of RSM, including server-side isMaster handling
SERVER-56371 Upgrade timelib to 2021.06
SERVER-56373 [RRFaM] When writing FaM images to txn table, write oplog entries with needsRetryImage
SERVER-56374 [RRFaM] Have update path write to config.image_collection
SERVER-56375 [RRFaM] Have delete path write to config.transactions
SERVER-56376 [RRFaM] Add jstest that exercises both retryable FaM behaviors
SERVER-56489 New pass-through test with random hello server-side delays
SERVER-56563 [RRFaM] Forge noop image oplog entries for chunk migration
SERVER-56668 Create config.image_collection when setting fCV to 4.0 on primary
SERVER-56713 [RRFaM] Avoid creating images while in initial sync
SERVER-56795 Changes from SERVER-53274 were unintentionally reverted
SERVER-56819 $indexOfCP returns incorrect result when searching for empty string inside empty string with non-zero start index (classic execution engine only)
SERVER-56854 Provide the ability for RSM requests to timeout and mark the server as failed
SERVER-57015 [RRFaM] Writing to the image collection must be in an UnreplicatedWriteBlock
SERVER-57044 [v4.0] Add jstest that changing the fCV will disable new retryable findAndModify format even if storeFindAndModifyImagesInSideCollection=true
SERVER-57172 Do json.send before DSI post_run
SERVER-57173 Write invalidated image for retryable findAndModify when secondaries apply operations earlier than minValid
SERVER-57356 Better logging around failed chunk migration

4.0.24 Changelog

Replication

SERVER-49187 Make ReplSetTest .stepUp() robust to election failures.
SERVER-50049 assert.soonNoExcept() should not access TestData.traceExceptions for non-resmoke tests.
SERVER-51163 Mark nodes returning InvalidReplicaSetConfig in heartbeats as down
SERVER-53666 curSecondary in rollback test fixture not guaranteed to be in SECONDARY state after restart
SERVER-54708 Rollback test fixture only ensures sync source's lastApplied > rollback node's lastApplied if both emrc=false and inMemory

Query

SERVER-36926 Undefined behavior from signed overflow in cursor manager, can result in mongos invariant failure
SERVER-50073 Error message when creating a mixed hashed/not hashed index does not state the problem
SERVER-54710 Large number of $or clauses can create profiling entry exceeding max BSON size, causing the query to fail when it should not

Operations

SERVER-54770 Add /proc/meminfo MemAvailable to FTDC

Build and Packaging

SERVER-54031 errorcodes.py doesn't check embedded C++ code in Python scripts
SERVER-54255 Update RHEL 7 AMI for package testing

Internals

SERVER-5722 Support a 'sort' field in ops array for JS Benchmarking Harness
SERVER-35649 Nodes removed due to isSelf failure should re-attempt to find themselves
SERVER-43847 Make ReplSetTest's stepUp function resilient to slow machines
SERVER-44132 DataBuilder move assignment computes size incorrectly
SERVER-45836 Provide more LDAP details (like server IP) at default log level
SERVER-47030 Fix date_time_support code to not produce exceptions
SERVER-48910 Do not consider keystore.metadata as a keystore on <= 4.0
SERVER-52953 $geoNear does not always match coordinate given to 'near' when maxDistance is set to 0
SERVER-53566 Investigate and reproduce "opCtx != nullptr && _opCtx == nullptr" invariant
SERVER-53612 StepDown hangs until timeout if all nodes are caught up but none is immediately electable
SERVER-53831 Force SpiderMonkey to garbage collect in ReplSetTest.checkOplogs
SERVER-53992 Remove calls to detect-outliers from performance tasks
SERVER-54136 Make the authenticate command respect enforceUserClusterSeparation
SERVER-54139 Remove CURL share support from HTTP curl client
SERVER-55189 Call awaitReplication() before returning from syncFrom() in rslib.js
SERVER-55395 4.0.23 does not build with gcc 10
WT-4296 Add aggressive mode to sweep server
WT-4614 Trigger sweep immediately to reclaim space after a table drop
WT-6309 Add support for start/stop arguments to wt printlog command
WT-6430 Move WT_CONN_SERVER flags into their own field
WT-7026 Atomically read and set ref->addr in case of race
WT-7028 Sweep thread shouldn't lock during checkpoint gathering handles
WT-7104 Redact user data from printlog output

4.0.23 Changelog

Sharding

SERVER-50305 ARS::next() does not respect OperationContext deadline
SERVER-53274 The force-write of the history field to all chunks on fCV upgrade from 3.6 to 4.0 is unnecessary

Replication

SERVER-52744 rollback node's lastApplied > sync source's lastApplied in rollback_after_enabling_majority_reads.js
SERVER-53345 Excuse arbiter_new_hostname.js from multiversion tests
SERVER-53459 rollback_all_op_types.js should ensure sync source's lastApplied > rollback node's lastApplied
SERVER-53609 lastCommittedTransaction section causes frequent schema changes that limit FTDC retention

Query

SERVER-40361 Reduce memory footprint of plan cache entries
SERVER-47869 Add diagnostic logging to ClusterCursorManager

Storage

SERVER-46876 During the eviction pressure, we should quit the compact operation instead of crashing the process
SERVER-52950 recoverOplogAsStandalone mode must not start oplog truncater thread

Operations

SERVER-54074 [v4.0] Log start and end of changes to table log settings

Internals

SERVER-43904 When stepping down, step up doesn't filter out frozen nodes
SERVER-46686 Explain does not respect maxTimeMS
SERVER-46740 establishCursors() must always drain the AsyncRequestsSender::_baton
SERVER-52879 Periodic operation latency spikes every 5 minutes due to closing idle cached WT sessions
SERVER-53234 jstests/core/profile2.js fails when background operations are run against test database
SERVER-54091 Update assertion messages for dbhash check run by resmoke.py
SERVER-54134 Ignore newer mongo versions on older branches of setup_multiversion_mongodb.py

4.0.22 Changelog

Sharding

SERVER-36739 Use the mongos_manual_intervention_action hook in concurrency stepdown suites
SERVER-41192 Add a metric for the size of the SessionCatalog under logicalSessionRecordCache
SERVER-42632 Disable pinger threads that reach out to config server to make integration tests pass
SERVER-46393 Always check client last operation time when computing operationTime to append to the response
SERVER-48679 flushRoutingTableCacheUpdates should block on critical section with kWrite, not kRead
SERVER-51808 invariant failure: readConcern level != Available
SERVER-51885 Blacklist balancing_sessions_collection.js from sharding_csrs_continuous_config_stepdown
SERVER-52955 KeysCollectionClientDirect should check if majority read concern is supported by storage engine

Replication

SERVER-33747 Arbiter tries to start data replication if cannot find itself in config after restart
SERVER-50116 Forbid oplog writes when replication is enabled
SERVER-51262 Rename skipCheckingForNotMasterInCommandDispatch to skipCheckingForHelloInCommandDispatch
SERVER-51598 Add new test suites that test transaction expiration logic
SERVER-51887 "InvalidNamespace" in oplog tests on 4.0 branch
SERVER-52560 oplog_writes_only_permitted_on_standalone.js must wait for insert to be in stable checkpoint
SERVER-52680 Removed node on startup stuck in STARTUP2 after being re-added into the replica set
SERVER-53026 Secondary cannot restart replication

Query

SERVER-32960 $mod has inconsistent rounding/truncation behavior

Aggregation

SERVER-48523 Unconditionally check the first entry in the oplog when attempting to resume a change stream

Storage

SERVER-51858 Investigate queryable issue on 4.0.20
SERVER-52902 Remove assertion !haveJournalFiles() at dur_journal.cpp:265

Operations

SERVER-46729 Make Windows shell soft-fail for unavailable OCSP responder
SERVER-51757 Collect /proc/vmstat numa_pages_migrated statistics in FTDC

Build and Packaging

SERVER-52891 Run PPC builds less frequently

Internals

SERVER-45624 Pre-split and distribute chunks of sessions collection
SERVER-45992 InMemory engine startupwarnings confusing
SERVER-48742 Log whenever profiler settings are changed via setProfilingLevel
SERVER-49165 endSessions command in Client.Disconnect causes an authorization failure for an unauthed connection on a host that requires authentication
SERVER-50123 Record number of physical cores on all platforms
SERVER-50267 Set output limit for 'rawMongoProgramOutput()'
SERVER-50365 Stuck with long-running transactions that can't be timed out
SERVER-50445 Return the value as double when NumberLong subtraction overflows in ExpressionSubtract
SERVER-50605 Add {logMessage: "msg"} test-only command
SERVER-51303 Lookup stage followed by $match on type uses wrong field in matching condition
SERVER-51607 Upgrade Twisted dependency to at least twisted-19.7.0
SERVER-51902 Check if storage engine supports Recover to Stable Timestamp rather than if eMRC=false in sync_tail.cpp
SERVER-52646 Validate and possibly fix edge cases in regex rewrite rules for userToDNMapping
SERVER-52654 new signing keys not generated by the monitoring-keys-for-HMAC thread
SERVER-52806 deb install files assume systemd
SERVER-52969 Disable Powercyle on non-master branches
SERVER-53233 Fix change_streams_update_lookup_shard_metadata_missing.js [4.2, 4.0]
SERVER-53348 Pin PyOpenSSL
WT-6507 Exit cache eviction worker after our operation has timed out
WT-6602 Allow operation timeout ms to be passed to commit and rollback
WT-6666 Start op timer when we configure it in rollback and commit

4.0.21 Changelog

Security

SERVER-45803 mongodecrypt needs a ServiceContext
SERVER-45938 Allow matching O/OU/DC in client x509 cert if clusterMode:keyFile
SERVER-47733 SymmetricEncryptorWindows shouldn't pad when update is called
SERVER-50463 Make PooledLDAPConnection::refresh take self-ownership

Sharding

SERVER-47616 Improve error when logical sessions cannot have more than one user authenticated on a single connection

Replication

SERVER-48518 Rollback via refetch (EMRC = false) can make readers to see the rolled back data even after the rollback node catches up to primary.
SERVER-48928 Allow primary-elect to complete drain mode even if it is stepping down unconditionally
SERVER-49986 Convert isMaster command to hello and add aliases
SERVER-49987 Rename response fields if “hello” is sent on mongod
SERVER-49988 Rename response fields if "hello" is sent on mongos
SERVER-49989 Add db.hello() shell helper
SERVER-49990 Alias setSlaveOk() and getSlaveOk() shell helpers
SERVER-49991 Alias printSlaveReplicationInfo() shell helper
SERVER-50607 Must hold mutex when calling _checkForShutdownAndConvertStatus_inlock
SERVER-50626 Race in read_concern_majority_getmore_secondaries.js
SERVER-50631 [v4.0] Ban rollback_after_disabling_majority_reads.js with --nojournal and MMAPv1
SERVER-50640 listCommands should return "isMaster" alias in addition to "hello" command name
SERVER-50747 Increase no-op interval in change_streams_update_lookup_shard_metadata_missing.js
SERVER-50963 rollback_via_refetch_anomaly.js fails on inMemory storage engine

Query

SERVER-18341 Matcher returns false positives in comparison predicates with MinKey/MaxKey
SERVER-35921 Index scan uses incorrect bounds for MinKey and MaxKey
SERVER-39392 Invariant in PlanStage::dispose always evaluates as true
SERVER-45233 Indexed inequalities to arrays return incorrect results
SERVER-50291 Add query knob to enumerate $or children in a different order
SERVER-51083 Problem with regex index bounds
SERVER-51120 Find queries with SORT_MERGE incorrectly sort the results when the collation is specified

Aggregation

SERVER-40317 $facet execution has no limit on how much memory it can consume

Storage

SERVER-50915 [v4.0] fsyncLock must not take a stable checkpoint when majority read concern is off

Operations

SERVER-26726 Check number of arguments for createIndex() and throw error if more than two arguments

Build and Packaging

SERVER-46342 DEB installs of MDB do not issue systemctl daemon-reload on install
SERVER-47138 MSI installer produces incorrect config file
SERVER-50078 Compile bypass applied when it should not have

Internals

SERVER-15902 use signal handling stack via sigaltstack to improve behavior on stack overflow
SERVER-41872 PlanEnumerator AndAssignment::choices ordering not stable and is relevant to set of plans generated
SERVER-43233 Add ability to request only specific attribute(s) for the LDAP groups
SERVER-43973 jsTestName() should return a unique name for each thread in the parallel suite
SERVER-45202 Improve Command alias infrastructure
SERVER-47883 Newly-elected primaries do not wait for single-phase background index builds to complete before accepting writes
SERVER-48410 Signed integer overflow fix for datetime library
SERVER-48709 signing key generator thread on config server not waken up as expected
SERVER-49054 Server MSI should install Compass instead of Compass Community
SERVER-49352 4.0 does not build with python 3.8
SERVER-49786 Freeze DSI and Genny for non-master perf projects
SERVER-50180 Fix User lifetime management in AuthorizationManager::acquireUserForSessionRefresh
SERVER-50183 Copy _awaitPrimaryAppliedSurpassesRollbackApplied function from RollbackTest to RollbackTestDeluxe
SERVER-50216 Adjust sys-perf frequencies
SERVER-50736 Make OpenSSL explicitly accept SNIs presented in ClientHello
SERVER-50818 Coverity analysis defect 114987: Wrapper object use after free
SERVER-51106 Make the isMaster command a derived class of hello
SERVER-51608 [4.0] backport implicitly_retry_on_background_op_in_progress.js
SERVER-51802 Add requires_majority_read_concern tag to decrypt_tool.js on v4.0
TOOLS-2589 [v4.0] sslAllowInvalidHostnames bypass ssl/tls server certification validation entirely
WT-6421 Avoid parsing metadata checkpoint for clean files
WT-6559 Use the session ID from the new session to determine statistics bucket
WT-6598 Add new API allowing changing dhandle hash bucket size

4.0.20 Changelog

Sharding

SERVER-40441 Arbiter nodes log error messages when try to create session collection or check if it exists
SERVER-44115 Exclude jstests/core/autocomplete.js from sharded jscore tests
SERVER-47799 AsyncRequestsSender should update replica set monitor in between retries for InterruptedAtShutdown
SERVER-48491 Add requires_document_locking tag to sessions_collection_reaping.js
SERVER-48674 Check if replication is enabled before checking if the node is an arbiter in LogicalSessionCacheImpl
SERVER-48926 Fix remaining sharding tests that incorrectly set votes to 0 on shard secondaries
SERVER-49233 Introduce a flag to toggle the logic for bumping collection's major version during split

Replication

SERVER-37390 RollbackTestFixture doesn't need to wait for a new primary if it didn't shut down the current primary
SERVER-42004 localhost{1,2,3}.js tests should wait for a primary to be elected before shutting down the test
SERVER-45610 Some reads work while system is RECOVERING
SERVER-46897 REMOVED node may never send heartbeat to fetch newest config
SERVER-47849 Add more logging to shutdownTask
SERVER-48276 ReplSet Free Monitoring URLs inconsistent
SERVER-48967 Prevent replicated writes on empty namespaces on secondaries
SERVER-50039 Timing error in dbadmin.js test

Query

SERVER-47223 geoNear/$geoNear does not apply index hints
SERVER-48993 explodeForSort can produce incorrect query plan
SERVER-49527 recoverFromOplogAsStandalone does not relax index constraints

Storage

SERVER-43097 Improve log messaging when index builds get foregrounded because of startup recovery
SERVER-47694 fix multikey. again
SERVER-48453 Lazily initialize a record store's auto incrementing counter on deletes
SERVER-48695 setAppliedThrough must set orderedCommit=false on the recovery unit
SERVER-49449 index_restart_secondary.js is not compatible with storage engines without support for persistence

Operations

SERVER-44051 getShardDistribution() does not report "Collection XYZ is not sharded" on dropped but previously sharded collections
SERVER-48244 Shell should not hard-code the allowed explain levels and let the server reject it instead

Build and Packaging

SERVER-42042 Warn or fail early on dynamic builds with toolchain compiler and tcmalloc
SERVER-46927 Clarify dependencies for release-related tasks
SERVER-48329 Adjust naming of action_type.h on either master or all stable branches
SERVER-48640 Update RHEL 6.2 AMI for package tests
SERVER-48659 Update SLES 12 AMI for package tests
SERVER-48681 Update Debian 8.1 AMI for package tests
SERVER-49925 Dynamic builders should not combine the mongodbtoolchain with tcmalloc
SERVER-50124 Pin lazy-object-proxy python module

Internals

SERVER-33229 Overload startParallelShell in auto_retry_on_network_error.js to connect after loading the auto_retry_on_network_error.js override
SERVER-36454 Upgrade ASIO
SERVER-37993 Upgrade asio to eed287d46c14310f0daf4ff19b0297917143723
SERVER-41600 IndexCatalog::refreshEntry should invalidate the index from the CollectionInfoCache
SERVER-42908 Add ErrorCodes to retryable errors to match drivers
SERVER-46758 setFCV can be interrupted before an fCV change is majority committed and rollback the fCV without running the setFCV server logic
SERVER-47930 Ubuntu 20.04 - ldap_authz_authn.js fails to load test certificate
SERVER-48032 Update references of community mailing-lists to MongoDB Developer Community Forums
SERVER-48107 Retry replSetStepDown in rollback_test.js
SERVER-48514 Separate testing 'called' and 'successful' fields for serverStatus election metrics
SERVER-48569 Add ConflictingOperationInProgress as acceptable error code to stepDown in validateCollectionsCallback
SERVER-48657 Use evergreen module to control signal processing in perf projects
SERVER-49007 Roundtrip registration ID in metrics response in mock_http_server.py
SERVER-49071 Make ldap_fastest_host_selection.js tolerate missing LDAP servers in statistics
SERVER-49142 Validate correct field name in RoleName::parseFromBSON()
SERVER-49335 publish_packages should use barque API key
SERVER-49404 Enforce additional checks in $arrayToObject
WT-5242 Minimize checkpoints pinned during backup
WT-6118 Fix missing checkpoint in backup
WT-6141 Disable checkpoint deletion during backup

4.0.19 Changelog

Sharding

SERVER-37929 ShardRegistry in config servers can keep invalid entries after it rolls back until next reload
SERVER-39498 ShardRegistry reload inside onReplicationRollback can get stuck
SERVER-42862 Prevent shard refreshes in mergeChunks command from joining earlier refreshes
SERVER-45910 Router might target wrong shard on write operation for unsharded collection
SERVER-46487 The mongos routing for scatter/gather ops can have unbounded latency
SERVER-46942 State information can be leaked if server closes too quickly on network_interface_tl
SERVER-47436 Make shards validate shardKey in dataSize command
SERVER-47745 Make chunk query in ShardingCatalogManager compatible with chunks created in 3.4
SERVER-47913 Redact sharding messages in split chunk and distributed lock acquisition
SERVER-47999 balance_repl.js should ensure writes have replicated before attempting to read them from a secondary

Replication

SERVER-46195 Secondary in rollback_after_enabling_majority_reads.js goes into rollback before validate command
SERVER-47558 Revert SERVER-38356 on 4.0
SERVER-47613 Invariant in processReplSetRequestVotes
SERVER-47695 Write commands run by threads that can survive rollback can fail operationTime invariant in ServiceEntryPoint
SERVER-48276 ReplSet Free Monitoring URLs inconsistent
SERVER-48374 Pass in array for awaitReplication() in rollback_after_enabling_majority_reads.js

Query

SERVER-40805 Indicate the reason for replanning in the log file
SERVER-47209 change_streams_update_lookup_shard_metadata_missing.js should handle the node the change stream cursor was established on going through rollback
SERVER-47773 geoNear invariant on mongos
SERVER-47994 Fix for numerical overflow in GeoHash

Write Operations

SERVER-47233 WriteOp can be left in pending state, leading to erroneous NoProgressMade write error from mongos

Aggregation

SERVER-44689 Add serverStatus counter for each use of an aggregation stage in a user's request

Storage

SERVER-46398 Suggest explicit dbpath when starting mongod on macOS and the default dbpath isn't found
SERVER-46699 Report the oplog visibility timestamp in FTDC

Operations

SERVER-45295 Make sure that LDAP logs always contain context on AuthZN operation

Internals

SERVER-39241 Plan scoring incorrectly applies noFetchBonus bonus to all plans when no projection is provided
SERVER-42525 Single-node replica sets shouldn't wait for electable caught up secondaries during shutdown
SERVER-43889 Distinguish between a retryable write and a transaction when failing a command
SERVER-45334 Service Name not respected in MSI Installer
SERVER-45367 When the Range Deleter is waiting for the open cursors, list these cursors in the logs.
SERVER-45508 Invariant failure in getFieldsWithStringBounds with descending point ranges
SERVER-46633 Windows TLS implementation may declare hostname mismatch on unrelated error
SERVER-46758 setFCV can be interrupted before an fCV change is majority committed and rollback the fCV without running the setFCV server logic
SERVER-47063 Upgrade static OpenSSL to 1.1.1e
SERVER-47071 CheckReplOplogs can fail to detect a mismatch
SERVER-47187 Add startup warning when SeIncreaseWorkingSetPrivilege not present
SERVER-47256 Update listed maintainer for repo package files
SERVER-47373 Improve handling of empty TLS packets
SERVER-47634 Make metric tests in stepup.js more robust
SERVER-47686 Upgrade static OpenSSL to 1.1.1g
SERVER-47765 4.0 Only: Make variables declared above DocumentSourceGraphLookup available within
SERVER-47798 Audit isMaster response validation for mongod and mongos
SERVER-48269 Fix rlp tests in 4.0

4.0.18 Changelog

Security

SERVER-46834 Use monotonic time in UserCacheInvalidator
SERVER-47113 LDAP connection pool acquisition state should own host list

Sharding

SERVER-29153 Make sure replica set nodes agree on which node is primary before doing writes in ShardingTest initialization
SERVER-44463 insertConfigDocumentsAsRetryableWrite() incorrectly calculates BSON array overhead
SERVER-45119 CollectionShardingState::getCurrentShardVersionIfKnown returns collection version instead of shard version
SERVER-46307 database_versioning_safe_secondary_reads.js should not set "votes: 0" on the shard secondaries

Replication

SERVER-33627 Initial syncer needs to handle exception

Query

SERVER-32903 Ambiguous field name error should be ignored during initial sync

Operations

SERVER-34199 "timing" section of serverStatus can have large impact on ftdc retention
SERVER-41117 Blacklist autocomplete.js from parallel testing
SERVER-44892 getShardDistribution should use $collStats agg stage instead of collStats command
SERVER-46024 Collect /proc/vmstat swap statistics in FTDC

Build and Packaging

SERVER-46983 Upload repobuilding packages to correct URL
SERVER-46996 all push/publish_packages tasks should run on small hosts

Internals

SERVER-30739 config_server_checks.js should assert if initial replSetConfig fails
SERVER-36467 continuous stepdown overrides should maintain parameters
SERVER-37148 Remove mr_shard_version.js and mr_during_migrate.js in favor of MR FSM test
SERVER-38119 Windows dump file naming does not account for dots in directory names
SERVER-42278 Log SockAddrs produced during LDAP connection establishment with manually derived sizes
SERVER-43763 Figure out if global LDAP synchronization can be disabled when libldap is built with OpenSSL.
SERVER-45050 Change Windows Kerberos client to use default credentials when no password is specified
SERVER-45156 SockAddr constructor should take sockaddr, not sockaddr_storage
SERVER-45867 Use latest version of signal processing
SERVER-46754 Use new repobuilder service
SERVER-46766 Teardown clusters after every perf run
SERVER-46851 Decrease the number of jobs in logical session cache tests
SERVER-46899 Fix tcmallocReleaseRate parameter in 4.0 and 3.6
SERVER-47080 Enable verbose logging for LDAP tests
SERVER-47114 Make ldapproxy.py use IOCP on Windows
WT-5119 Birthmark records can be read as normal updates if reads race with checkpoints
WT-5376 WT_UPDATE.type field can race with visibility checks when returning key/value pairs

4.0.17 Changelog

Sharding

SERVER-44598 Shards do not treat the IGNORED version as "intended sharded"
SERVER-45273 Remove the mongos version check in allow_partial_results.js and return_partial_shards_down.js
SERVER-45599 Backport the changes to CollectionShardingState done as part of SERVER-32198 to 4.0
SERVER-45770 Add to information contained in logfile about "moveChunk.to"
SERVER-46001 Move checkShardingIndex outside shardCollection's read critical section on the primary shard
SERVER-46466 Race with findAndModify retryable write and session migration

Replication

SERVER-34768 Rollback can fail if run against a lagged node that catches up
SERVER-35050 Don't abort collection clone due to negative document count
SERVER-35437 Wait for secondary state after stepdown command in multi_rs.js
SERVER-39112 Primary drain mode can be unnecessarily slow
SERVER-39495 Shard key is omitted from update and remove oplog entries with multi:true
SERVER-42219 Oplog buffer not always empty when primary exits drain mode
SERVER-43867 Work around unrecoverability of rollback via refetch in tests
SERVER-45178 Rollback via refetch can cause rollback to happen successfully w/o updating the rollback id.
SERVER-45493 temporarily disable failing assertion in election_candidate_and_participant_metrics.js
SERVER-45840 Blacklist tests that run emptycapped from replica_sets_kill_secondaries_jscore_passthrough
SERVER-46050 Use getLastAppliedOpTime rather than getHeartbeatAppliedOpTime for checking primary's position
SERVER-46238 Race between commitTransaction and transaction expiration leads to invariant

Query

SERVER-45363 Issue with mongodb text indexes and weights when using wildcard specifier

Aggregation

SERVER-45418 DocumentSourceCursor batching memory accounting does not account for empty documents, leads to unbounded memory use for count-like aggregates

Internals

SERVER-40014 System-Perf: Default is_patch expansion to false
SERVER-44325 Add polyfill for certificate chain verification
SERVER-44435 Allow x509 authorization to be selectively enabled based on the CA
SERVER-44853 MSI Should skip install MongoD service dialog when mongod is not selected to be installed
SERVER-45766 Remove "requires" from the server yaml
SERVER-46082 Use bin/analysis.py for performance projects
SERVER-46126 LDAP proxy and mongod startup race in ldap_insuffcient_access_rights.js
SERVER-46174 Free peer certificate in SSL_get0_verified_chain polyfill
SERVER-46365 getMore command before rs.initiate() can trip invariant
SERVER-46630 RemoveSaver writes GCM tag to incorrect file position
WT-5150 LAS sweep is not removing the entries that are no longer required
WT-5192 Don't allow checkpoints to evict without a snapshot
WT-5263 Prepared updates written to the lookaside file are not always read as needed
WT-5395 Fix a bug in the read lock implementation when there is a lot of contention
WT-5587 Limit how many checkpoints are dropped by a subsequent checkpoint

4.0.16 Changelog

Sharding

SERVER-44103 clear_jumbo.js should wait for balancer to be on mode: full for more than one round
SERVER-44130 Flip order of assert.lte arguments in logical_time_metadata.js

Replication

SERVER-45758 Add sleep to TimeInactiveMicrosShouldBeSetUponUnstashAndStash in session_test
SERVER-45761 Use same clock for test and working code in session_test [v4.0]

Query

SERVER-44658 Add correct tags for noPassthrough/max_time_ms.js
SERVER-45279 GranularityRounder can get stuck in loop when rounding infinity

Storage

SERVER-38794 CollectionOptions can be lost in createCollection if a write conflict exception is thrown
SERVER-45289 Conditional jump or move depends on uninitialised value(s) in validate_adaptor.cpp

Build and Packaging

SERVER-45713 Run rhel7 push and publish tasks on large rhel70 distro
SERVER-45732 Filter flags from net-snmp-config invocation more aggressively

Internals

SERVER-40047 Test for blocking queue should not test for non-guaranteed condition
SERVER-42573 Only warn about readConcernMajority enabled in primary-secondary-arbiter configuration
SERVER-45486 Add information to debug index key count mismatch issue in 'hashed_index_bad_keys_cleanup.js'
SERVER-45831 [4.0] Performance regression processing large aggregation commands

4.0.15 Changelog

Security

SERVER-45309 Ensure bind credentials live longer than LDAP operations

Sharding

SERVER-33597 Make allow_partial_results.js, return_partial_shards_down.js start shards as replica sets
SERVER-36865 make fsm workloads that extend kill_rooted_or.js more robust in the sharded concurrency suites, or blacklist them
SERVER-43195 Add namespace to ChunkManager ShardKeyNotFound failure in order to better diagnose failures.
SERVER-44341 Do not choose only first shard of all shards associated with a zone when pre-splitting during shard collection
SERVER-45100 Make the BatchWriteExecutor retry multi-writes only against unsuccessful shards

Replication

SERVER-35407 ReplicationCoordinatorExternalState and data replication must not be started after shutdown
SERVER-44061 Race while setting replication maintenance mode.
SERVER-44503 Race in replsets/auth2.js
SERVER-45396 fix the "me" field in isMaster responses when using splithorizon

Query

SERVER-42565 Aggregations and find commands sort missing fields differently
SERVER-45152 Negation of inequality on array can trip invariant

Aggregation

SERVER-44733 Change stream should throw ChangeStreamFatalError if a single shard cannot be targeted for updateLookup

Storage

SERVER-43910 include Client/OpCtx information in LockManager::dump() output
SERVER-44796 Adjust nojournal startup warning to be more compelling

Operations

SERVER-45290 Remove upstream metadata from v4.2's third party library manifest

Build and Packaging

SERVER-44550 Remove mobile specific embedded commands
SERVER-45346 Ubuntu 18.04 package testing task fails to install openssl

Internals

SERVER-34844 Relax expectations in apply_batches_totalMillis
SERVER-37406 A stashed Locker should keep information about the owning transaction
SERVER-39131 Refactor storage engine lock file support
SERVER-43210 jstests/sharding/kill_sessions.js doesn't wait for operation to be killed.
SERVER-43246 Add a log line for when a cursor is reaped due to logical session cleanup
SERVER-43349 Incorrect serialization for $elemMatch $not $ne
SERVER-44578 Remove unused db_raii and server_status libs from storage_wiredtiger_core's LIBDEPS_PRIVATE
SERVER-44828 Correct logic to re-compute dependencies after absorbing a $sort into query layer
SERVER-45472 Ensure RoleGraph can serialize authentication restrictions to BSON
WT-4636 Fix strace in syscall test
WT-5042 Reduce configuration parsing overhead from checkpoints
WT-5106 Remove temporary files in clang-format script
WT-5112 Handling goto labels with multiple words in s_goto.py
WT-5120 Checkpoint hangs when reconciliation doesn't release the eviction generation
WT-5125 Adding new stats for eviction target strategy
WT-5135 Change lookaside file inserts to use cursor.insert
WT-5169 WT_REF_LIMBO pages cannot support fast (leaf-page only) searches
WT-5196 Data mismatch failures with test/checkpoint after enabling LAS sweep
WT-5218 Improve eviction to differentiate between clean and dirty pages with WT_CACHE_EVICT_NOKEEP readgen
WT-5239 Fix syscall failure about metadata file open
WT-5247 Ensure that only idempotent modify operations are logged
WT-5277 Cursor key out-of-order detected in the lookaside file
WT-5297 syscall.py fail on mongodb-4.0

4.0.14 Changelog

Security

SERVER-28011 Support multiple KMIP hosts in the --kmipServerName parameter
SERVER-43090 Fix LDAP connection health tests with Okta
SERVER-43653 Upgrade static OpenSSL to 1.1.1d
SERVER-44320 Allow zoned sharding commands to be authorized via actiontypes

Sharding

SERVER-31083 Allow passing primary shard to "enableSharding" command for a new database
SERVER-42737 MongoDB stuck on update metadata
SERVER-42914 Implement random chunk selection policy for balancer for use in concurrency_*_with_balancer workloads
SERVER-44476 Include number of jumbo chunks remaining in output of removeShard

Replication

SERVER-41504 Track the number of ops during catchup in replSetStatus on primaries
SERVER-41505 Track the average number of catchup ops in serverStatus
SERVER-41506 Track metrics associated with a node calling an election
SERVER-41507 Track the time the new term oplog entry was written in replSetStatus on primaries
SERVER-41508 Track the time the new term oplog entry was majority committed in replSetStatus on primaries
SERVER-41512 Track metrics associated with a node voting in an election
SERVER-41513 Track the time the new term oplog entry was written by the primary and applied by secondary in replSetStatus on all nodes
SERVER-42534 Step down primary for less time in freeze_timeout.js and increase electionTimeoutMillis
SERVER-43239 numCatchUpOps in repSetGetStatus is incorrect
SERVER-43398 Fix race in replSetGetStatus_new_term_oplog_entry_fields.js
SERVER-43695 Add sleeps to session_test.cpp to account for discrepancy between curTimeMicros and Date_t clock sources [v4.0]
SERVER-43703 Race when disabling rsSyncApplyStop failpoint and stopping server
SERVER-43868 Session::TxnResources::release() can throw exceptions in destructors (4.0.x only)
SERVER-43879 OplogInterfaceLocal::next should return an owned BSON obj
SERVER-43972 initial_sync_capped_index.js should check SECONDARY state before running validate
SERVER-44005 Improve robustness of rollback_after_enabling_majority_reads.js
SERVER-44643 Use awaitSecondaryNodes in rollback_after_enabling_majority_reads.js instead of waitForState
SERVER-44675 server_status_metrics.js fails due to racy repl.buffer.count metric in serverStatus
SERVER-44788 Use awaitSecondaryNodes in seed_secondary_without_sessions_table.js instead of waitForState

Query

SERVER-32567 Replace queryoptimizer3.js with FSM test
SERVER-43699 Find $mod can result in UB
SERVER-44050 Arrays along 'hashed' index key path are not correctly rejected
SERVER-44269 Modernize max_time_ms.js
SERVER-44571 Documents involved in SERVER-44050 corruption scenario cannot be updated or deleted after upgrade

Aggregation

SERVER-38691 serverInfo not present in explain output for aggregation
SERVER-42756 $multiply operator may return with or w/o an error depending on whether pipeline optimisation is enabled
SERVER-43034 Special values handling is inconsistent in DoubleDoubleSummation
SERVER-43764 Add more testing for special values in DoubleDoubleSummation
SERVER-44174 $push and $addToSet should restrict memory usage
SERVER-44869 Add query knob to control memory limit for $push and $addToSet

Storage

SERVER-42312 Validate during rollback can cause count mismatch
SERVER-43322 Add tracking tools for measuring OplogStones performance
SERVER-43908 Modify IndexConsistency hash-map keys to avoid hitting an invariant on duplicate index keys in KeyString form for different indexes
SERVER-44188 [4.0] validate_tests should remove index entries by RecordId obtained from the cursor

Operations

SERVER-28604 Log when a cursor is reaped for exceeding the timeout

Build and Packaging

SERVER-37766 Platform Support: Remove Community zSeries From 4.0
SERVER-37772 Platform Support: Add Community & Enterprise RHEL 8 x64
SERVER-44392 Platform Support: Remove zSeries ubuntu 16.04
SERVER-44545 Remove builders for Embedded SDKs on Mobile Platforms
SERVER-44546 Remove mobile specific build and code artifacts
SERVER-44687 error: 'operator delete' is unavailable: introduced in macOS 10.12

Internals

SERVER-25025 Improve startup time when there are tens of thousands of collections/indexes on WiredTiger
SERVER-38002 Upgrade Pcre to at least 8.42
SERVER-39574 Support intermediate certificates in PEMKeyFile on Windows
SERVER-40218 Write out expansions in system_perf.yml with expansions.write
SERVER-40669 install_compass should not explicitly use python3
SERVER-40749 Include execution in generated task configuration file name
SERVER-42014 [4.0] repairDatabase should catch and report exceptions from repairCollections before re-opening the database
SERVER-42961 Fix Split Horizon testing on SLES
SERVER-43079 failpoint triggered by LogicalSessionCacheRefresh
SERVER-43085 Regenerate all testing certificates with SHA-256 instead of SHA-1
SERVER-43151 Error in aggregation assertion at value.cpp:1368
SERVER-43241 Fix Executor failures in ARS dtor during shutdown
SERVER-43319 Increase cursor timeout for 'concurrency_simultaneous' fixtures
SERVER-43576 DBClientRS does not propagate applicationName
SERVER-43577 Ensure ssl exceptions that terminate connections are logged.
SERVER-43741 scons.py should not swallow the underlying ImportError
SERVER-43771 Make v4.0's ClockSource::waitForConditionUntil avoid conversion of Date_t::max() to system time
SERVER-43843 Skip validate during the rollback fuzzer "restartNode" command
SERVER-43900 Set max_hosts to 1 for stitch_support_lib_build_and_test and embedded_sdk_build_and_test task groups
SERVER-44006 Change Packaging License from AGPL to SSPL
SERVER-44009 Upload pip freeze output for sys-perf and microbenchmarks
SERVER-44064 Perform explicit cast on MessageCompressorManager parameter
SERVER-44140 Use signal processing without DSI
SERVER-44183 Failure to listen on an asio socket should be fatal
SERVER-44248 [4.0] Use tojson instead of JSON.stringify in disk/repair_collection_failure.js
SERVER-44312 Specify evergreen auth in performance tests for signal processing
SERVER-44319 Skip keyfile check in replica_sets/auth1.js on windows
SERVER-44567 Reimplement CommandState destructors for v4.0
SERVER-44568 Update the embedded version of the server's timezone data file to tzdb-2019c
SERVER-44651 Update signal processing version
SERVER-44727 detect-changes should not be called via run-dsi
SERVER-44868 Initialsync logkeeper and logkeeper-short tests should pass snapshot ID and dataset link respectively to dsi(sys-perf)
SERVER-44946 Reenable tests disabled in BACKPORT-4512
WT-4499 Fix prepared transactions for cursor key order check failure
WT-4520 Fix prepare transactions fallout during cursor navigation
WT-4537 Fix WiredTiger cursor prev/next traversal failure on prepare retry
WT-4617 Cursor next/prev returns PREPARE_CONFLICT only once
WT-4733 Change test/format to do longer-term repeatable read testing
WT-4844 Only log an informational message when a set read-timestamp is older than the oldest timestamp.
WT-4899 Fix bugs that could allow more than one birthmark in an update chain
WT-4940 Reconciliation should set prepared/uncommitted for each update
WT-4943 Fix a bug where uncommitted updates could be discarded
WT-4961 Checkpoints with cache overflow must keep history for reads
WT-5160 Stop requiring a checkpoint before calling rollback_to_stable
WT-5201 Migrate develop test format to mongodb-4.0 branch

4.0.13 Changelog

Security

SERVER-43751 Recompute compressor manager message parameters

Sharding

SERVER-10456 get cursor logic used to find docs to clone (in migration) is not same as in removeRange
SERVER-36159 Log whenever the gossiped config server opTime term changes
SERVER-36222 call to ReplSetTest.restart in shard_identity_rollback.js is racy
SERVER-36315 After stepdown the CSRS dist lock manager keeps trying to unlock locks
SERVER-41480 Increment collection major version on chunk splits/merges
SERVER-42793 Autosplit size tracker random initial value is too low

Replication

SERVER-34526 Remove the livenodes list from repl tests
SERVER-37173 rollbackViaRefetch should survive attempt to drop non-existent collection
SERVER-38356 Forbid dropping oplog when replset config is present
SERVER-38685 Startup warning if In-Memory SE is used and writeConcernMajorityJournalDefault is true
SERVER-39310 Check canServeReadsFor in getMores
SERVER-40009 Set/honour initial sync flag at the early stages of initial sync
SERVER-40954 Error message for UnrecoverableRollbackError in fCV 3.6 should recommend downgrading to 3.6
SERVER-41218 rollback_after_enabling_majority_reads.js test should ensure the correct primary before restarting other nodes [v4.0]
SERVER-41499 Track number of elections called for each reason in serverStatus
SERVER-41500 Track number of successful elections for each reason in serverStatus
SERVER-41501 Track the number of elections that require primary catchup in serverStatus
SERVER-41502 Track the number of times primary catchup concludes for each reason in serverStatus
SERVER-41503 Track the target opTime for catchup in replSetStatus on primaries
SERVER-41509 Track the number of attempted stepDowns in serverStatus
SERVER-41510 Track the number of failed stepDowns in serverStatus
SERVER-41511 Track the number of stepdowns caused by seeing a higher term in serverStatus
SERVER-41792 Starting replica set member standalone with recoverFromOplogAsStandalone as true should replay entries from oplog based on the checkpoint we start from.
SERVER-41918 CollectionBulkLoader does not anticipate exceptions from MultiIndexBlock
SERVER-42129 Modify test to account for the ephemeralForTest storage engine's missing oplog after restart
SERVER-42155 Indicate term mismatches when readConcern times out
SERVER-42454 Wait for node to find appropriate sync source before disabling failpoint in do_not_advance_commit_point_beyond_last_applied_term.js
SERVER-42714 Log replication recovery oplog application completion at level 0
SERVER-42767 Improve logging in ReplSetTest.stopSet
SERVER-42910 Oplog query with higher timestamp but lower term than the sync source shouldn't time out due to afterClusterTime
SERVER-43230 Fix race in catchup_takeover_two_nodes_ahead.js
SERVER-43245 Wait for node to be secondary on restart in seed_secondary_without_sessions_table.js

Query

SERVER-37690 countDocuments throws an error when matching 0 document
SERVER-40110 ClusterCursorManager::CursorEntry::isKillPending() should not call checkForInterrupt
SERVER-40382 Add a serverStatus metric to report plan cache memory consumption
SERVER-41863 Make sleep command check that server clock has advanced before returning
SERVER-42749 Ban server_status_with_timeout_cursors from transaction passthroughs
SERVER-43074 Do not use a global variable to encode 'multikeyPath' information when writing out catalog documents

Storage

SERVER-41909 Add the ValidateCmd Genny workload to system_perf.yml
SERVER-42398 abortTransaction and commitTransaction commands should not acquire ticket irrespective of the prepared state.
SERVER-42441 renameCollectionForApplyOps should always rename the target out of the way if it exists
SERVER-42652 Fix issue with rename collection
SERVER-42709 Change error message about missing UUIDs on startup
SERVER-42915 New style repair's catalog corrections are often false positives, aggressively marking repl nodes as corrupted

Operations

SERVER-42257 Add new shell startup banner
SERVER-43081 validate should report when an index's 'multikeyPaths' are set but the 'multikey' flag is false
SERVER-43350 The server crashes when trying to join collections ($ lookup with pipeline).

Build and Packaging

SERVER-42911 Rebuild mongodb by building.md and failed to build due to ModuleNotFoundError: No module named 'Cheetah' with MSVC on windows
SERVER-44114 Don't use scons cache on Ubuntu 18.04 s390x

Internals

SERVER-37837 Possible for TransactionParticipant to never get cleaned up if no write happened
SERVER-38141 Incorrect usage of MONGO_CONFIG_HAS_SSL_SET_ECDH_AUTO prevents enabling of elliptic curve auto negotiation
SERVER-38493 Allow queryable storage engine to reuse connections between mongod and HTTP server
SERVER-39777 step down nodes with a high freeze timeout before validating them on shutdown
SERVER-41099 Fix incorrect error propagation from shards for explain command
SERVER-41102 Join threads in transport_layer_asio_test
SERVER-41248 Ensure ReplicaSetMonitor initializes its random state with truly random data
SERVER-41261 Use the oplog entry after the common point to calculate rollbackTimeLimitSecs
SERVER-41802 generate_resmoke_tasks doesn't apply max_sub_suites option
SERVER-41939 Connect to fastest LDAP server first
SERVER-41990 Burn_in should not average hook times for unique hooks
SERVER-42075 Add DSI module to perf.yml
SERVER-42107 LDAP conn pool should not block on the network in isHealthy() implementation
SERVER-42178 Disable Split Horizon HOSTALIAS testing on SLES
SERVER-42216 Ensure pin_getmore_cursor.js waits for server to finish killing cursor
SERVER-42476 Improve free monitoring tests
SERVER-42618 Disable legacy SCons cache pruning for all build variants
SERVER-42706 Test seeding secondary without sessions or transactions table
SERVER-42814 Remove informational message on overflow file size quota
SERVER-42866 Trigger a logical session cache refresh on all shards in the ShardedCluster test fixture before running test
SERVER-42953 ttl_repl_secondary_disabled.js should prevent elections
SERVER-43022 Allow compile to be run independently on rhel 62
SERVER-43186 Limit the number of tests added to a generated suite
SERVER-43200 Make auth/mongoURIAuth.js robust to slow commands
SERVER-43240 Add DSI and mongo-perf modules to MMAP build variants in v4.0 mongo
SERVER-43582 Do not attempt to authenticate ReplicaSet Monitor
SERVER-43634 Report different errors for missing scons and fail to import scons
WT-4502 Assertion checking hazard pointers on page discard is too strong
WT-4792 Add stat to track pages queued for eviction after LRU sorting
WT-4840 WT_CURSOR.modify must require explicit, snapshot-isolation transaction
WT-4869 Stop adding cache pressure when eviction is falling behind
WT-4881 Soften the restrictions on re-entering reconciliation
WT-4882 Improve checkpoint performance when there are large metadata pages
WT-4892 Improve statistics about forced eviction
WT-4893 Fix a race between internal page child-page eviction checks and cursors in the tree
WT-4895 Fix debug eviction mode so it chooses skew more randomly
WT-4898 Don't allow the eviction server to reconcile if it's busy
WT-4920 Add statistics tracking when eviction server is waiting for page transitions
WT-4956 Handle the case where 4 billion updates are made to a page without eviction
WT-4957 Revert part of a change about when pages are queued for urgent eviction
WT-5050 Assertion failure during urgent eviction of metadata page
WT-5074 Fix "make check" on exotic architectures

4.0.12 Changelog

Security

SERVER-41587 Improve SECBUFFER_EXTRA handling

Sharding

SERVER-36394 mongos should reset chunk size tracking information when autosplit = false or splitvector returns too few split points

Replication

SERVER-42467 initial_sync_test_fixture_test assumes wiredTiger

Query

SERVER-41829 findAndModify ignores filter expressions that are not objects

Operations

SERVER-41152 A space in the authenticationMechanisms string should produce at least a warning message

Build and Packaging

SERVER-42173 Add Ubuntu 14.04 to v4.0
SERVER-42603 Recent service file change may cause cyclic dependencies

Internals

SERVER-35114 Make it possible to adjust the period of active jobs in the PeriodicRunner
SERVER-38395 Python global logger is polluted when importing certain resmokelib modules
SERVER-39348 Cleanly release sessions in TLASIO unittest
SERVER-39928 Stop testing PyMongo with Python 2.6 in drivers-nightly
SERVER-39936 Use PeriodicRunner handles to simplify shutdown ordering
SERVER-40899 Disallow chaining in change_stream_update_lookup_read_concern.js
SERVER-42061 Validate decrypted payload in ESE
WT-4878 Disable random dhandle selection and fine tune eviction target calculations
WT-4913 Fix the Windows CRC32 on blocks that aren't 8B aligned and/or multiples of 8B

4.0.11 Changelog

Security

SERVER-41069 Ability to disable authorization via x509 extensions
SERVER-41441 Upgrade static OpenSSL to 1.1.1c

Sharding

SERVER-26531 jumbo flag in chunk can be cleared when the shard that owns it donates a chunk
SERVER-36004 SessionUpdateTracker should ignore no-op entries for pre/post image oplogs
SERVER-36443 Long-running queries should not cause a build-up of unused ChunkManager objects
SERVER-36469 shard_kill_and_pooling isn't querying the shard it's supposed to
SERVER-38457 Actually fix race condition in retryable writes test
SERVER-39756 Sharding a very large collection can result in a long stall of writes against this collection
SERVER-40346 Write shardCollection initial chunks with BatchWriter
SERVER-40535 Possibility to get a non-existent key if using ReadConcern level:local when reading signing keys in ReplicaSet
SERVER-41575 secondary_shard_versioning.js should not set the shard secondaries votes to 0
SERVER-41859 logical_time_metadata.js shouldn't assume lastApplied opTime equals $clusterTime
SERVER-41866 Reverse mutex acquisition order in CatalogCache::_scheduleDatabaseRefresh
SERVER-41867 CatalogCache::_scheduleDatabaseRefresh/_scheduleCollectionRefresh can try to grab _mutex it already owns
SERVER-41869 Reverse mutex acquisition order in CatalogCache::_scheduleCollectionRefresh
SERVER-42024 shards_and_config_return_last_committed_optime.js shouldn't assume opTime in response equals opTime in metadata

Replication

SERVER-37065 Report ismaster:false in isMaster command response immediately upon learning of a new term
SERVER-38659 Race condition in IsMasterIsFalseDuringStepdown unittest
SERVER-40248 OplogEntry's getOperationToApply() returns incorrect field for updates
SERVER-40336 ReplicationCoordinatorImpl::_random isn't robust to replica set members being started at the same time
SERVER-41036 Make ReadWriteAbility::_canAcceptNonLocalWrites AtomicWord<bool> to prevent torn reads.
SERVER-41342 read_committed_stale_history.js must perform continuous writes to ensure majority commit point propagates to secondary
SERVER-41497 Create IDL types for ElectionMetrics, ElectionCandidateMetrics and ElectionParticipant Metrics
SERVER-41498 Create ReplicationMetrics class
SERVER-42055 Only acquire a collection IX lock to write the lastVote document

Query

SERVER-40134 Distinct command against a view can return incorrect results when the distinct path is multikey
SERVER-40869 $subtract with date can cause undefined behavior
SERVER-41065 Make agg evaluate() thread safe by passing 'Variables' as a parameter
SERVER-42079 all non-primary-started index builds should be labeled backgroundSecondary

Aggregation

SERVER-40383 dateFromParts does not overflow correctly if isoWeek smaller than 1
SERVER-41785 Improve robustness of change_streams_resume_same_clustertime_different_uuid.js
SERVER-42232 Adding a new shard renders all preceding resume tokens invalid

Storage

SERVER-41351 Improve error message from failure to obtain lock for storage stats collection
SERVER-41533 Remove unnecessary IndexConsistency::_classMutex
SERVER-41534 Reuse KeyString in RecordStoreValidateAdaptor
SERVER-41535 Use vector instead of map for IndexConsistency::_indexesInfo
SERVER-41536 Use vector instead of map for IndexConsistency hash buckets
SERVER-41537 Use 64K hash buckets instead of 4M for index validation
SERVER-41538 Remove indirection through indexNumber in IndexConsistency
SERVER-41539 Cache key ordering in IndexInfo
SERVER-41540 Fix _indexNsResultsMap usage
SERVER-41541 Put a KeyString in IndexInfo for the RecordStoreValidateAdaptor

WiredTiger

SERVER-41913 Avoid in-place modify operations for logged collections

Operations

SERVER-36099 FTDC for mongos is unworkably large for large installations
SERVER-41632 db.collection.getShardDistribution() shows NaN

Build and Packaging

SERVER-36043 systemd unit for mongod starts before multi.user target
SERVER-39465 Update master android builds to r19 NDK
SERVER-40133 Create Markdown description of vendored third party libraries
SERVER-40563 Our init scripts check /proc/[pid]/stat should validate that (${procname}) is the process' command name.
SERVER-41039 Android and java multiarch builders cannot import yaml during config expansion
SERVER-41302 Lift restriction on publishing embedded SDKs from the 4.2 branch
SERVER-41424 scons should fail early if invoked with wrong Python interpreter
SERVER-41443 Update Enterprise License
SERVER-41568 Update third party inclusions for June 6th 2019
SERVER-42233 Bump Windows package dependencies

Internals

SERVER-26626 In external_auth_WT JSTests, ensure that Saslauthd has fully started before continuing test
SERVER-33589 Create an initial sync fuzzer suite
SERVER-35067 Blacklist explain2.js from retryable writes jscore stepdown suite
SERVER-37984 Upgrade yaml-cpp >= 0.6.0
SERVER-39480 Log network failure status in DBClientConnection
SERVER-39642 Decrement egress counter when scoped connection not returned to the pool
SERVER-40052 Shutdown in mongos can trigger BatchWriteOp invariant
SERVER-40156 Initial implementation of Split Horizon
SERVER-40295 Add details to stage_builder.cpp invariant message
SERVER-40643 Add tests for replSetConfig and replSetInitiate with Split Horizon
SERVER-40645 Add tests for SNI/TLS behavior of Split Horizon
SERVER-40738 Don't try to upload evergreen tarball when doing Android mobile builds
SERVER-40923 Remove npm test command from "run jstestfuzz" Evergreen function
SERVER-40924 Add Evergreen task to sanity check fuzzer can parse JavaScript tests
SERVER-41004 killSessions command can return CursorNotFound error for successful kill
SERVER-41013 Make lock_stats.js test more resilient against unset stats
SERVER-41016 Calculate deltas for updates to large documents
SERVER-41047 errnoWithDescription always returns "Unknown error" on Linux
SERVER-41062 Always return TransactionTooLarge rather than BSONObjectTooLarge when transaction is too large to fit in a single applyOps
SERVER-41075 Remove 'mongo/repl/replication_coordinator.h' from op-context inclusion path
SERVER-41096 ContinuousStepdown thread and resmoke runner do not synchronize properly on the "stepdown permitted file" and "stepping down file"
SERVER-41131 Add StrongWeakFinishLine
SERVER-41148 FTDC is calling boost::filesystem without passing an error_code parameter
SERVER-41164 Change Stream pipeline regex matches wrong oplog docs when using '|' pipe in db name
SERVER-41169 Most powercycle testing for Linux was removed from Evergreen
SERVER-41184 Add metrics to indicate the amount of sharded updates done with only _id in query
SERVER-41349 Add a log statement for slow dns resolution
SERVER-41361 Do not read at lastApplied while already holding the PBWM lock on secondaries
SERVER-41401 patch_files.txt doesn't distinguish between enterprise and community files
SERVER-41432 Create failpoint which when enabled makes $expr evaluate to false rather than an error when an invalid expression is encountered
SERVER-41442 Fix second race in umask.js
SERVER-41546 SysV init scripts should verify PIDfile exists instead of failing
SERVER-41680 Propagate ${branch_name} Evergreen expansion to fuzzer invocation
SERVER-41702 Copy Collection NamespaceString before yielding locks in AutoGetCollectionForRead
SERVER-41753 Fix indexc.js to not depend on the clock always moving forward
SERVER-41789 sys-perf: Use bootstrap.overrides in bootstrap.yml config file
SERVER-41828 Ensure LDAP conn pool prefers ldap servers listed first
SERVER-41833 Update README license text
SERVER-41862 Make generated file for split resmoke tasks optional
SERVER-41897 Use assert.sameMembers to compare two sets in jstests/ssl/libs/ssl_x509_role_auth.js
SERVER-41967 Symlink /data to Z instead of C
SERVER-42002 JSTests for regex characters in db/coll names should abide by system differences
SERVER-42195 Stepdown suites fail with Python exception when run with --repeat >1
SERVER-42228 LoggerRuntimeConfigError exceptions can lead to background dbhash thread running until Evergreen task times out
WT-4477 Add eviction debug mode and extra checks
WT-4690 Make sure eviction does not split during checkpoints
WT-4706 Add a statistic to track the lookaside table size
WT-4712 Add debug log op record for non-logged tables
WT-4723 Restructure the reconciliation code
WT-4760 Checkpoint should not read past a stable update
WT-4776 Modify operations should be equivalent to updates
WT-4803 Implement file_max configuration for Cache Overflow mechanism
WT-4817 heap-buffer-overflow failure in timestamp_abort
WT-4823 Add check for uninitialised lookaside resources
WT-4827 Apply commit timestamps when a truncated page is read
WT-4848 Fix perf regression when calculating differences

4.0.10 Changelog

Security

SERVER-38217 Consider recording failed attempts to kill cursors in the audit log
SERVER-39864 Move principal name extraction to error handler in SASL Start
SERVER-40226 Upgrade static OpenSSL to 1.1.1b
SERVER-40393 Disable SSL_MODE_RELEASE_BUFFERS in ASIO
SERVER-40817 Handle createIndexes on roles collection in RoleGraphUpdate

Sharding

SERVER-36355 Improve error message when shard key not present in all documents
SERVER-36457 mongos_rs_shard_failure_tolerance.js test should assert that the movePrimary command succeeds
SERVER-39420 Remove in-memory boolean to indicate config.server.sessions collection set up
SERVER-40318 Condition variable wait in NamespaceSerializer::lock is not exception safe
SERVER-40346 Write shardCollection initial chunks with BatchWriter

Replication

SERVER-35636 Renaming collection for applyOps needs to check completeness of target namespace
SERVER-39221 Test rollback after enableMajorityReadConcern upgrade/downgrade
SERVER-39672 ReadConcern level in multi-statement transactions defaults to "snapshot"
SERVER-39831 Never update commit point beyond last applied if learned from sync source
SERVER-40068 Unblacklist kill_sessions_kills_transaction.js from replica_sets_jscore_passthrough.yml
SERVER-40329 Log all transactions at TXN verbosity levels >= 1
SERVER-40335 Don't wait for election handoff in ReplSetTest.stopSet()
SERVER-40628 Initial sync could fail under replsetprio1.js settings
SERVER-40788 Improve logging around replication catchup
SERVER-40839 Add tests for empty unprepared transactions
SERVER-40855 run_check_repl_dbhash_background.js with majority read concern false must allow for a missing majority op time
SERVER-40976 rollback_after_enabling_majority_reads.js should not run on mmapv1
SERVER-41006 Make replbatchlimitbytes configurable
SERVER-41081 do_not_advance_commit_point_beyond_last_applied_term.js must wait for Node E to reach stopReplProducerOnDocument failpoint

Query

SERVER-40618 Remove removec.js from causally consistent jscore passthrough

Storage

SERVER-30356 Improve error reporting for validation
SERVER-32709 Mobile SE: Index creation takes a long time
SERVER-40786 Improve error message in IndexCatalog::dropAllIndexes()
SERVER-41213 Unique background index builds may produce inconsistent keys

Operations

SERVER-34621 Log if client attempts renegotiation
SERVER-38625 Improve shell error handling when Atlas user has not configured IP Whitelisting
SERVER-38867 "show collections" no longer lists system.* collections
SERVER-39820 Add the client IP address to the successful authentication log message
SERVER-40112 db.disableFreeMonitoring() returns "not master" on secondary even after rs.slaveOk()
SERVER-40423 Misleading error message when 'count' is run as the first command in a transaction
SERVER-40866 Use JSON.stringify() to serialize string in tojson()

Build and Packaging

SERVER-37765 Platform Support: Remove Ubuntu 14.04
SERVER-39025 Windows MSI unattended installation missing mongod.exe with ADDLOCAL
SERVER-40242 Update banner inclusions for vendored tools
SERVER-40491 Update Debian 8 image for package test
SERVER-41038 The results of git describe for MONGO_VERSION vary by git version

Internals

SERVER-39869 System-Performance: Enable authentication in all tasks
SERVER-40166 Force BG clock now == Date_t::lastNow
SERVER-40246 Create evergreen task for cursor manager sys perf workload
SERVER-40344 Upgrade ASAN builders to Ubuntu 18.04
SERVER-40514 Race between BufferedHandler.close() and BufferedHandler.flush() leads to resmoke.py hanging with --log=buildlogger
SERVER-40553 Filter unauthorized views in listCollections
SERVER-40654 Do not override timeouts for generated tasks on PPC
SERVER-40704 Have better task timeouts when dynamically setting the minimum
SERVER-40720 Improve watchdog fuse test reliability
SERVER-40758 Increase the amount of memory available for logical_session_cache_replication* tasks
SERVER-40840 Disable tools testing in ssl_cert_password.js
SERVER-40889 free_monitoring tests should use a virtualenv
SERVER-40922 Add npm install command to "run jstestfuzz" Evergreen function
SERVER-40932 Increase timeout for shutting down the ServiceExecutor
SERVER-41088 Propagate Evergreen order field to Cedar for system perf
SERVER-41103 Fix fuzzer task invocations
TOOLS-2068 mongodump oplog delay
TOOLS-2290 mongorestore should not treat % in collection names as URL escape character
WT-4352 Resolve birthmarks during eviction in more cases
WT-4631 Always clear the read timestamp for transactions
WT-4687 Querying all_committed shouldn't get timestamp zero
WT-4693 WT_CONNECTION::reconfigure should not require quiescence when downgraded
WT-4750 Sweep can remove active lookaside records when files are closed and re-opened
WT-4759 Save a copy when an old overflow value is discarded
WT-4768 Inconsistent data with lookaside eviction followed by sweep
WT-4769 Don't discard active history for empty pages
WT-4794 Mark lookaside history resolved in all paths
WT-4796 Enhance diagnostics that track ref state transitions

4.0.9 Changelog

Security

SERVER-38945 SSL performance regression

Sharding

SERVER-40333 Only clone collection options once for each shard on shard collection

Replication

SERVER-39278 Wait for rollback to finish before ending session in transient_txn_error_labels_with_write_concern.js
SERVER-39672 ReadConcern level in multi-statement transactions defaults to "snapshot"
SERVER-40039 Increase assert.soon timeout in initial_sync_invalid_index_spec.js
SERVER-40298 Track transaction size on 4.0

Query

SERVER-38949 Incorrect index bounds for {$ne: ["String"]} query
SERVER-40391 Remove low value explain2.js test

Storage

SERVER-16571 Use Actual Memory Constraint vs. Total System Memory When They Differ
SERVER-39026 Use correct type for retrieving WiredTiger statistics
SERVER-39654 Storage statistics not logged for a slow transaction
SERVER-40390 Blacklist skip_repairing_fcv.js from running on mmapv1 on 4.0

Operations

SERVER-40131 Incorrect format string in Windows stacktrace generator.
SERVER-40259 Include third party notices for ASIO and variant

Build and Packaging

SERVER-36622 Package tests fail for newer Ubuntu

Internals

SERVER-34260 Ability to reuse a single TCP connection from mongod to the LDAP server
SERVER-38239 Define and Implement getOperationStatistics of storage interface
SERVER-38240 Extend OpDebug object to support storage statistics
SERVER-38243 Test session storage statistics are part of slow operation report
SERVER-38649 Add AlarmScheduler and AlarmRunner for general purpose alarms
SERVER-38984 Attach IDs to users
SERVER-39061 Fix the wt_operation_stats test to wait for the operation log to appear
SERVER-39178 Negotiate SCRAM mechanism in MongoURI::connect()
SERVER-39361 Synchronise collecting storage engine stats with shutdown
SERVER-39488 Test does not see the storage statistics in the profiled output .
SERVER-39764 Negation of $in with embedded array can incorrectly plan from the cache, triggering invariant
SERVER-39869 System-Performance: Enable authentication in all tasks
SERVER-39934 CurOp::completeAndLogOperation should not hang waiting for global lock
SERVER-40341 Thread SSL connection mode through ConnectionPool interface
WT-4324 Ensure checkpoints rewrite pages with data in the future
WT-4554 Enhance WT salvage to handle the case of corrupted WiredTiger.turtle
WT-4619 Coverity 111398: leaked memory

4.0.8 Changelog

Security

SERVER-39217 TLS intermediate CA certificate not working with macOS and 4.0.5

Sharding

SERVER-35219 Regain MongoDB balancer performance with sessions

Replication

SERVER-37255 replSetReconfig with concurrent election can trigger invariant
SERVER-38994 Step down on SIGTERM
SERVER-40194 Revert SERVER-33248 on 4.0
SERVER-40355 rs.config that contains an _id greater than the number of nodes will crash

Query

SERVER-39903 notablescan parameter should be ignored for internally used namespaces

Storage

SERVER-40024 Rename collection on a secondary can set the collection minimumVisibleSnapshot timestamp backwards in time after a background index build's ghost commit cluster time timestamp

Operations

SERVER-37722 Quiet mode does not suppress connection end events

Build and Packaging

SERVER-35628 Failed runtime links to do not result in failed tests for android emulators

Tools

TOOLS-2229 Mongofiles deletes chunks of existing file when failing to put_id with existing _id

Internals

SERVER-34286 noPassthrough/currentop_query.js is failing on Amazon Linux 2
SERVER-36750 blacklist memory.js on ppc64le in memory variants
SERVER-37389 Give different messages for different connection failure reasons
SERVER-38644 Guard against ephemeral files disappearing during umask test
SERVER-39580 [4.0] Skip repairing the fCV document if the major version is too low
SERVER-40154 change_streams_resume_at_same_clustertime.js should not assume change order
SERVER-40233 Increase transactionLifetimeLimitSeconds from 3 to 24 hours
SERVER-40305 Add diagnostic logging to max_time_ms.js

4.0.7 Changelog

Security

SERVER-36606 Remove size limits on BSON audit events
SERVER-39202 Improve deterministic calculation of key container names
SERVER-39571 mongod cannot verify certificates from the CNG provider

Sharding

SERVER-36901 sh.status() "Last reported error:" is actually 5th Latest error message
SERVER-36958 Parts of the _configsvrShardCollection command do not retry on network errors
SERVER-37591 MigrationSourceManager is not exception safe before startClone completes
SERVER-38192 Ignore duplicate key error from refreshLogicalSessionCacheNow
SERVER-38205 Optimize splitVector for the jumbo-chunk case
SERVER-38387 agg_out.js concurrency workload always fails to shard the output collection
SERVER-39203 failcommand_ignores_internal.js fails against mongod 3.6
SERVER-39847 Migrating session info can trigger fassert when destination shard has transaction history truncated by oplog
SERVER-40010 Shard secondaries with 4.0 binary and 3.6 fCV are calling _flushDatabaseCacheUpdates

Replication

SERVER-35663 Replication recovery does not update the logical clock
SERVER-37179 Wait for specified write concern whenever commitTransaction returns a NoSuchTransaction error
SERVER-37274 commands_that_accept_wc tests can give secondaries priority zero
SERVER-37569 prohibit MapReduce on sessions with txnNumbers
SERVER-37846 writeConcern can be satisfied with an arbiter if the write was committed
SERVER-38297 Killing session on a secondary currently applying prepare oplog entry can fassert
SERVER-38354 Allow shutdown error when reading last applied optime on startup
SERVER-38722 CollectionCloner should handle QueryPlanKilled on collection drop
SERVER-39215 Fix aggregation_currentop.js such that we don't compare timestamps generated from 2 different sources (mozjs & server).
SERVER-39286 server_write_concern_metrics.js must use requires_journaling tag
SERVER-39490 opWriteConcernCounters can cause undefined behavior due to overflow
SERVER-39641 Blacklist max_time_ms.js from read concern linearizable passthrough

Query

SERVER-13779 Allow $not to be applied to $regex (currently only /regex/ syntax is allowed)
SERVER-36910 Reduce severity or remove log message for PlanExecutor::DEAD error during find
SERVER-38764 External sorter should use 64-bit integers for file offsets
SERVER-39210 Add debug logging to change_streams/shell_helper.js
SERVER-39472 Backport changes to apply_ops_concurrent_non_atomic.js to account for HMAC key inserts in 3.6 and 4.0.
SERVER-39650 Ensure internal options cannot be specified in a raw aggregate command sent to mongos
SERVER-39771 TextMatchExpression crashes instead of serializing in some cases

Aggregation

SERVER-31098 Wrong ns in system.profile for aggregation query
SERVER-35740 Report high-water-mark resume token with each (possibly empty) change stream batch
SERVER-38408 Return postBatchResumeToken from all mongoD change streams
SERVER-38410 Allow ARM to consume postBatchResumeToken for merging
SERVER-38411 Propagate postBatchResumeToken through mongoS to client
SERVER-38412 Allow resuming from a high-water-mark resume token
SERVER-38413 Always set an initial postBatchResumeToken
SERVER-38414 Upgrade/Downgrade testing for change stream high water mark
SERVER-38942 Improve robustness of postBatchResumeToken integration tests
SERVER-38975 Single-collection high water marks omit UUID on shards where the collection does not exist
SERVER-39166 $graphLookup should force a pipeline to split in sharded cluster
SERVER-39322 Backport timelib fix for incorrect snprintf invocation with static buffer
SERVER-39394 Views collation check should traverse through nested $lookup pipelines
SERVER-39410 Re-enable batching in DSCursor for change stream cursors
SERVER-39487 Aggregation operator $sqrt output for NumberDecimal is the same as $exp
SERVER-39612 Validate fields in $geoNear
SERVER-40094 Do not prematurely reject resume attempt in DSShardCheckResumability

JavaScript

SERVER-39481 Remove unused C++ injected JS constructors

Storage

SERVER-17010 Reduce file handle usage in File based Sorter
SERVER-35449 Return the oldest read timestamp used by any open transaction
SERVER-35732 Hyphenated database names do not work with dbStats.fsUsedSize / TotalSize
SERVER-38555 cappedTruncateAfter must not set oldest timestamp during startup recovery when enableMajorityReadConcern=false
SERVER-38745 MigrationDestinationManager assigns incorrect timestamps while building multiple indexes
SERVER-38801 Cope with large BSON blobs in queryable's listDirectory call.
SERVER-38833 A failure to timestamp a storage transaction requires restarting the transaction
SERVER-39106 GlobalLock acquisition should throw when ticket acquisition times out if there is a max lock timeout and no deadline
SERVER-39259 Mobile SE: Adjust SQLite Pragmas for Improved Performance
SERVER-39719 Ensure that a node performing an initial sync from a secondary with a in-progress index build creates the index before initial sync is done
SERVER-39723 Change listIndexes command behavior to show in-progress index builds
SERVER-39773 decrease number of updates in rollback_wt_cache_full.js
SERVER-39871 Make catalog_raii_test more resistant to clock issues on Windows
SERVER-39922 Fix lock stats suboperation tests for mobile

Operations

SERVER-34422 Expose metrics on idle versus active client threads
SERVER-37155 Improve the LDAP server logging
SERVER-38038 mongo shell should be linked with ErrorExtraInfo derivatives
SERVER-38530 Add getResumeToken shell helper
SERVER-39093 Cannot use TLS with readPreference={mode: "secondary"} without specifying --ssl to mongo shell

Build and Packaging

SERVER-33958 When using thin archives the --cache=nolinked mode should push thin archives to the cache
SERVER-35356 Add release process builder for embedded SDKs
SERVER-35737 install_compass fails on MacOS
SERVER-39354 Remove SCons cache pruning from prior branches
SERVER-39483 Stripped binaries and .debug files should not be cached

Tools

TOOLS-2030 mongodump does not dump system.js collections
TOOLS-2109 Build Tools with Go 1.11
TOOLS-2166 mongoimport --uri logs incorrect connected hosts

Internals

SERVER-35138 service_state_machine.cpp should log a backtrace if there's an uncaught exception
SERVER-35551 Mongobridge nodes don't remember their network partition configuration after a restart
SERVER-36231 Mongos write path doesn't look for retryable write concern errors
SERVER-37183 BSONElement::safeNumberLong is not safe
SERVER-37382 printShardingStatus.js races with ShardingUptimeReporter thread
SERVER-37620 Improve watchdog_test reliability
SERVER-38319 DBClientRS should propagate URI options through all paths
SERVER-38538 Improve thread safety of PeriodicRunnerImpl
SERVER-38674 --ssl=off builds emit a scons warning
SERVER-38697 Powercycle kill by PID might try to kill the wrong process
SERVER-38725 Maven central release automation cannot close sonatype repository (401 unauthorized)
SERVER-38746 Provide reason for transaction abort
SERVER-38748 Background indexes created through applyOps should run on the command thread
SERVER-38789 Accept connection failure on Windows in ssl_alert_reporting.js
SERVER-38816 Use generate.tasks for required tasks over target runtime
SERVER-38837 Make periodic_runner_impl_test more lenient in OnePausableJobResumesCorrectly
SERVER-38933 currentOp is not resilient to drop shard
SERVER-38954 Increase query execution time for the test case in max_time_ms.js that expects it to hit the time limit
SERVER-39009 Make bulldlogger credentials location configurable via environment variable
SERVER-39014 Incorrect error reported while re-installing with the Windows MSI
SERVER-39019 $elemMatch $ne serialization is incorrect, doesn't roundtrip
SERVER-39031 Make SCons default --jobs to CPU count
SERVER-39056 Further refine readWriteAnyDatabase
SERVER-39058 Synchronize user set modification in AuthorizationSession with Client
SERVER-39127 Use generate.tasks for already converted tasks on all variants
SERVER-39128 Avoid double-authentication during connect from mongo shell
SERVER-39138 New test suites do not handle excludes properly when dividing suites
SERVER-39212 waitForSecondaries in background dbhash check must wait for lastApplied to reach clusterTime when enableMajorityReadConcern=false
SERVER-39232 Allow commands that do not require auth to refresh sessions
SERVER-39284 Better handle timeouts for generated tasks with repeated execution
SERVER-39303 Coverity analysis defect 105263: Dereference after null check
SERVER-39386 Specifically use the version of the android NDK that we want to use
SERVER-39421 Fix opCtx and baton waits
SERVER-39564 burn_in_tests.py doesn't run tests in the configuration for *_gen Evergreen tasks
SERVER-39590 improve port_options.js logfile polling
SERVER-39686 Clean up cloud_nightly project file
SERVER-39746 System-Performance: Write project in runtime.yml
SERVER-39779 Don't override timeouts if not all test have history
SERVER-39822 Improve watchdog_test.exe test reliability
SERVER-39823 Free Monitoring may ignore re-register requests on secondaries
SERVER-39830 Race in PeriodicRunnerImpl between start() and stop()
SERVER-39900 change_streams_resume_at_same_clustertime.js should not assume same that multi-update across shards are performed at the same clusterTime
SERVER-39946 Handle splitting tasks with only filtered test history
SERVER-40034 Set setup_group_can_fail_task to true for compile-related task groups
SERVER-40076 Tag JavaScript tests with the reason they're unable to run in Atlas
SERVER-40195 Pin all Gradle dependencies
TOOLS-1906 Ignore mongorestore error "x509 certificate routines:X509_STORE_add_cert:cert already in hash table"
TOOLS-2158 mongodump failing on Windows with "error opening system CA store: Access is denied."
TOOLS-2167 Add CGO flags for building on Windows
TOOLS-2168 Add CGO flags for building on MacOS
TOOLS-2210 Build with tools with Address Space Layout Randomised (ASLR) flags enabled
WT-4447 Add prototype implementation allowing limiting of IO per subsystem
WT-4483 Improve caching of small updates to large values
WT-4518 Give applications a chance to handle panic before API panic returns
WT-4522 Update WiredTiger copyrights to 2019
WT-4528 Retry Windows functions on access denied
WT-4532 Fix null pointer access to WT_DATA_HANDLE in __wt_page_in_func
WT-4547 Consolidate capacity and block manager bytes written
WT-4562 Coverity: possible divide by zero conn_capacity:434
WT-4576 Coverity warning in conn_capacity.c
WT-4615 Sync backup file before returning backup cursor

4.0.6 Changelog

Security

SERVER-37565 mongod continuously restarting after upgrade to 4.0.2
SERVER-38293 Make listDatabases understand collection privileges

Sharding

SERVER-9043 Link flushRouterConfig on the config server and shards
SERVER-31156 Admin command to update the chunk metadata for only one collection
SERVER-36863 query_config.js assumes that config.mongos is always present
SERVER-38050 The range deleter doesn't validate it is still operating on the same collection after the deletion loop
SERVER-38062 Add assert.commandWorked() to commands in read_pref_cmd.js
SERVER-38196 Coverity analysis defect 105128: Unchecked return value
SERVER-38472 A config server can return early for a shardCollection command even if the shard hasn't finished its own shardCollection command
SERVER-38641 clone_catalog_data.js should call awaitLastOpCommitted on CSRS before calling _cloneCatalogData directly against shard
SERVER-38751 _migrateClone and _transferMods incorrectly labeled as idempotent in MigrationDestinationManager
SERVER-39030 Wrong info logged by splitVector
SERVER-39180 Wrong initial chunk owner shard can be selected when sharding non-empty collection with pre-created zones
SERVER-39234 Sharding an empty collection in mixed-shard version configurations may leave all chunks on the primary shard

Replication

SERVER-32146 Log slow oplog entry application
SERVER-34943 failCommand failpoint should ignore commands from replica set members
SERVER-35608 Invariant that term from lastAppliedOptime is never greater than our current term
SERVER-37189 transactions.currentActive has a value of -1
SERVER-37910 Create new serverStatus metric for number of operations applied on a secondary that's incremented at batch boundaries
SERVER-37915 Replication doesn't update opsCounterRepl command on secondaries
SERVER-38052 ReplBatcher thread must handle exceptions
SERVER-38059 Transactions write conflicts tests should clean up any transactions on failure
SERVER-38200 Fix ./jstests/replsets/initial_sync_oplog_hole.js to prevent using stale heartbeat info in the test.
SERVER-38476 Increase timeout for clean_shutdown_oplog_state.js, again
SERVER-38647 backup_restore_rolling.js can fail due to stepdown
SERVER-38740 Remove wait for drop to have pending X lock in abort_transaction_thread_does_not_block_on_locks.js
SERVER-38998 Create serverStatus metrics for readConcern and writeConcern
SERVER-39142 ServerWriteConcernMetrics must lock _mutex before modifying members
SERVER-39267 Guard opWriteConcernCounters behind flag

Query

SERVER-35455 QueryPlannerAccess should hold owned pointers by unique_ptr rather than raw pointer
SERVER-38275 Handle explains without namespaces
SERVER-38601 Add regression test for memory leak during planning

Write Operations

SERVER-37284 ndeleted:0 is logged/profiled when the number of deleted documents is not known

Aggregation

SERVER-39109 mongod crash: Invariant failure !_exec src/mongo/db/pipeline/document_source_cursor.cpp 295

Storage

SERVER-37484 Only alter table logging settings on startup and not collection creation
SERVER-37911 CreateIndex via applyOps should notify opObserver in the WUOW of index commit
SERVER-38434 queryableBackupMode and wiredTigerEngineConfigString flags are incompatible
SERVER-38498 decrease number of updates in rollback_wt_cache_full.js
SERVER-38779 Build a mechanism to periodically cleanup old sessions from session cache
SERVER-38869 Log more information in run_check_repl_dbhash_background.js
SERVER-38928 background dbhash test hook incorrectly relies on a primary's lastApplied being >= its secondary's lastApplied

Operations

SERVER-33469 Make syslog log lines consistent with mongod log lines
SERVER-38983 Differentiate UserNotFound from AuthenticationFailure in audit log

Build and Packaging

SERVER-35936 MongoDB Community Windows installer fails to install Compass
SERVER-37775 Platform Support: Add Community RHEL7 (zSeries)
SERVER-37777 Platform Support: Add Community SLES12 (zSeries)
SERVER-37778 Platform Support: Add Community & Enterprise Ubuntu 18.04 (zSeries)
SERVER-38416 Upgrade static OpenSSL to 1.1.1a
SERVER-38726 Add stable toolchain variables files
SERVER-39176 Repo config for RHEL7 s390x is missing

Internals

SERVER-31755 Raise intermediate $lookup document size to 100MB, and make it configurable
SERVER-34394 Server Option to Explicitly Prevent SNMP Usage
SERVER-35393 Go Driver Unit Tests receive error code 9001 when doing a large insert many
SERVER-35620 downloaded file integrity: use shasum instead of python script
SERVER-36740 Sometimes crashes on windows don't provide a backtrace
SERVER-36774 Allow shell assertion functions to take objects for the 'message' argument
SERVER-36817 replSetFreeze command run by stepdown thread may fail when server is already primary
SERVER-37078 Use awaitSecondaryNodes() instead of waitForState() to confirm a node is a secondary in repair_invalidates_replica_set_nodes.js
SERVER-37143 Retry on Interrupted errors in the background DB hash hook
SERVER-37240 Enable dbhash background thread for enableMajorityReadConcern:false variant
SERVER-37241 Add testing to verify proper expiration of sessions in the sessions collection
SERVER-37359 Update the test lifecycle script to use the new Evergreen test stats endpoint
SERVER-37428 Sys-perf: linux builds using enterprise bits
SERVER-37490 Increase the ConnectTimeout for powercycle
SERVER-37562 Reduce all IX locks to IS locks in SessionsCollectionRS
SERVER-38109 Update generate_resmoke_suite.py to use cached history endpoint
SERVER-38110 Generate resmoke config YAML for a sub-suite
SERVER-38112 Add "generate resmoke sub-suites" in etc/evergreen.yml
SERVER-38113 Generate evergreen config for generated sub-suites
SERVER-38114 Update evergreen.yml to use generate tasks for already split tasks
SERVER-38115 Consolidate setting of resmoke.py --job to a python script
SERVER-38177 Repair with bind_ip results in a null pointer dereference
SERVER-38182 run_check_repl_dbhash_background aborts all transactions after an error even if they've already successfully committed
SERVER-38415 checkLog.containsWithCount does not reset count before each loop of assert.soon
SERVER-38445 Date_t and Duration addition can overflow
SERVER-38509 Handle degraded mode for test history in generate_resmoke_suites
SERVER-38616 LDAPArrayIterator behaves incorrectly when initialized with an empty array
SERVER-38639 Install psutil module in "run tests" in etc/evergreen.yml [v4.0]
SERVER-38710 Support dependencies when generating evergreen tasks
SERVER-38748 Background indexes created through applyOps should run on the command thread
SERVER-38818 Better handle dependencies between generated tasks
SERVER-38887 Mongo.getDBs() does not correctly inspect privileges
SERVER-38946 Properly handle new excludes in generated tests
SERVER-38990 Exclude tests that require mmapv1 for s390x variants
SERVER-39013 Add gdb pretty printers for absl::flat_hash_map/set
WT-4192 Remove WiredTiger raw compression support
WT-4280 Add debugging to know which session has a hazard pointer
WT-4319 Improvements to csuite tests
WT-4331 Further extend max wait time for test_bug019.py
WT-4383 Update session statistics to reflect the operation statistics.
WT-4384 Add documentation about session statistics cursor
WT-4393 Document cursor behaviour for read committed isolation
WT-4410 Split 'unit-test' task to reduce Evergreen Ubuntu build variant runtime
WT-4417 Make os_cache_max and os_cache_dirty_max reconfigurable
WT-4421 Add a way to calculate modify operations
WT-4430 Fix race between prepare and page instantiate with fast truncate
WT-4434 Modify zstd compression level from 3 to 6
WT-4438 Use more accurate statistics for cursor cache totals
WT-4442 Add the ability to duplicate a backup cursor
WT-4454 Auto-generate Evergreen configuration when adding new 'make check' or csuite tests
WT-4455 test_wt4156_metadata_salvage with HAVE_ATTACH fails on zSeries
WT-4457 Add a maximum of dirty system buffers for the logging subsystem
WT-4463 Reduce runtime for csuite handle locks testing
WT-4464 In debug output row-store internal page keys may not format correctly
WT-4469 Coverity #105148: redundant test
WT-4470 Minimize testing that requires TESTUTIL_ENABLE_LONG_TESTS
WT-4479 Remove schema lock wait assertion from the test
WT-4480 Fix duplicate backup cursor and archiving check
WT-4481 Evergreen script cleanups
WT-4482 lint

4.0.5 Changelog

Security

SERVER-35212 URI connection does not default to admin database when no authSource is specified
SERVER-37687 Capture libldap ErrorString in bind failure

Sharding

SERVER-30714 Handle step down error in ReplicationCoordinatorExternalStateImpl::_shardingOnTransitionToPrimaryHook
SERVER-36349 Handle the ShardingOperationFailedStatus in the OperationShardingState destructor when the OperationContext is not created in a ServiceEntryPoint
SERVER-36965 Ensure setUp writes in safe_secondary_reads_single_migration_suspend_range_deletion.js get propagated to the shard secondary
SERVER-36966 Sharded map reduce may fail to clean up temporary output collection
SERVER-37051 ShardServerCatalogCacheLoader does not check the internal term after reading from the task queue
SERVER-37080 Implement tuneable batch size for chunk migrations
SERVER-37339 Sharding state is set to initialized on Grid before sharding components are fully initialized
SERVER-37354 Make _shardsvrShardCollection re-entrant
SERVER-37511 Logical session reaper and refresh threads should set up sessions collection immediately
SERVER-37616 Implement tuneable batch size for the rangedeleter
SERVER-37624 Sessions never expire when you change value of localLogicalSessionTimeoutMinutes
SERVER-37902 recovering_slaveok.js should assert all writes it makes succeed
SERVER-37918 Fast initial split algorithm produces corrupted routing info if passed unsorted zones list
SERVER-37932 Remove erroneous part of coll_epoch_test1.js that attempts to test something that shouldn't work, but due to a bug in the test, the test passes
SERVER-38371 Session catalog migration will skip later sessions if a different earlier session encounters new transaction
SERVER-38392 Remove assertion that we can't shard a non-empty collection associated with tags

Replication

SERVER-37317 Make sleepmillis more conservative in slow transaction logging unit tests
SERVER-37500 Blacklist geo_s2ordering from replica_sets_kill_primary_jscore_passthrough suite
SERVER-37557 Add startup warning about enableMajorityReadConcern and usage of arbiters
SERVER-37676 Implicit collection creation is allowed in aborted transactions
SERVER-37935 Remove read concern "majority" overrides for change streams test suites
SERVER-38024 initial_sync_oplog_hole test should be tagged as requiring document locking

Query

SERVER-36115 invalidated_cursors.js FSM workload should ensure killOp is sent to same node as currentOp
SERVER-37385 Change max_time_ms.js to tolerate 'Interrupted' error codes
SERVER-37838 stepDown during a getMore followed by an OP_KILL_CURSORS can crash the server
SERVER-38070 Infinite loop in aggregation expression
SERVER-38164 $or pushdown optimization does not correctly handle $not within an $elemMatch

Aggregation

SERVER-37027 [4.0 only] Adapt change stream resume token when a stream detects fCV changes
SERVER-37182 Different values when referencing whole object vs. a field of that object after $arrayToObject
SERVER-37200 $match stage following $listSessions not working against mongos
SERVER-37750 Optimized $sample stage does not yield
SERVER-37779 mongos does not correctly enforce that a change stream must be the first stage
SERVER-38223 change_fcv_during_change_stream.js requires majority read concern
SERVER-38332 change_fcv_during_change_stream.js requires transactions

Storage

SERVER-29825 Do not allow rename from unreplicated to replicated DB or vice-versa
SERVER-36873 ReplicationCoordinatorExternalStateImpl::shutdown() must not hold _threadMutex while waiting for _taskExecutor
SERVER-36968 Rebuild interrupted indexes before checking AuthZN index presence
SERVER-37313 FTDC collection blocked during foreground index build on secondary
SERVER-37408 Add afterClusterTime to initial sync collection scans
SERVER-37524 In-Memory Storage Engine With Storage Watchdog Crashes The Server
SERVER-37784 Repairing the size storer should not fassert
SERVER-37796 Always salvage WiredTiger metadata regardless of error code when starting with repair
SERVER-37862 Reduce update ops in initial_sync_wt_cache_full.js
SERVER-37930 Add test coverage for createIndexes inside nested applyOps
SERVER-37931 lock_stats_suboperation_logs.js should ignore noise lock stats

Operations

SERVER-35485 Mongo Shell does not accept compressors connection string argument
SERVER-36262 mongo shell: allow users to show dbs (on <4.0 versions of the server) without the listDatabases privilege
SERVER-36272 Shell assertion failure with certain characters in the password
SERVER-36977 Initial mongod.log is created using umask vs mode 600

Build and Packaging

SERVER-35972 Run push tasks more often
SERVER-37598 Add a canary builder for GCC 8
SERVER-38049 embedded-android pom.xml should declare slf4j dependency as optional
SERVER-38078 WT SCons configure checks for fallocate and sync_file_range are broken
SERVER-38421 Requirement on cryptography should reflect what is in the toolchain
SERVER-38581 Create "is_release" compile expansion

Tools

TOOLS-1709 Set build version and git revision using -ldflags
TOOLS-2149 Configure build outside Evergreen

Internals

SERVER-34770 Retry on JavaScript execution interruptions in stepdown suites
SERVER-35062 Add TPCC to Sys Perf Configuration
SERVER-35250 save dbtest debug symbols in debug_symbols tar
SERVER-35768 gssapiServiceName URL parameter does not work
SERVER-35832 Correct flaws in Dagger evergreen config
SERVER-36060 Make unit tests build cleanly on clang-6
SERVER-36437 The dbstats command should lock the database in MODE_IS instead of MODE_S
SERVER-36626 Draw wait-for graph from left to right
SERVER-36805 Run tpcc on 3 node replset
SERVER-36998 compile_dbtest task isn't running against large distro on Enterprise Windows 2008R2 builder
SERVER-37472 Improve behavior if user downgrades to 4.0 binary without setting fCV to 4.0
SERVER-37526 IDLify listDatabases command
SERVER-37527 Broken logic in ServerMechanismBase class.
SERVER-37551 Add {authorizedDatabases:bool} param to {listDatabases} command.
SERVER-37628 Fix mongo_uri_test:InvalidTestCase construction
SERVER-37678 Update linter to enforce SSPL in header files
SERVER-37717 Race between Baton::notify() and Waitable::wait()
SERVER-37854 Coverity analysis defect 105094: Uninitialized scalar field
SERVER-37877 Enable sys-perf testing of auditing on v4.0
SERVER-37913 coll_epoch_test1.js does not wait for the config server to replicate after dropping collections.
SERVER-37941 specifying --bind_ip localhost results in error "address already in use" when IPv6 alias exists
SERVER-38055 Mongod servers started through the shell do not respect TestData.enableMajorityReadConcern
SERVER-38066 Shell utils should open files in binary mode
SERVER-38098 MongoDB's yaml-cpp is rejected by latest MSVC
SERVER-38111 Implement max_sub_suites in generate_resmoke_suite.py
SERVER-38116 Update fuzzer tasks to use generate.tasks
SERVER-38159 Blacklist umask nopassthrough test on mmapv1
SERVER-38178 Buffer Overflow in data_builder.h when using terminated StringDatas
SERVER-38281 TLS info message isn't captured into system log
SERVER-38303 Temporarily handle ipv6 failures due to s390x machine without ipv6 enabled
SERVER-38306 change 'multipath' to 'multiversion' in evergreen_gen_fuzzer_test
SERVER-38312 Unable to run jstestfuzz* tasks on variants with long names
SERVER-38452 Automate Maven Central releases for MongoDB embedded
TOOLS-1566 Should not include "ssl" tag for Linux 64 build
TOOLS-1742 import cycle between util and testutil
TOOLS-1996 Allow building tools from inside an ordinary GOPATH
TOOLS-2155 Set version/git-commit via ldflags in Evergreen and Server Evergreen
TOOLS-2157 Update server vendoring
WT-3756 Adjust pre-allocated file amount downward if we're not using them quickly enough
WT-4043 Take locks while dumping the cache to avoid crashes
WT-4159 Improve log preallocation algorithm
WT-4298 Fix workgen to retry on WT_ROLLBACK and clear ops after warmup
WT-4343 Unlock when sleeping to allow other log threads to make progress
WT-4345 Set corruption and return salvage on facing a missing log file
WT-4371 Workgen improvements to create a MongoDB-like workload
WT-4372 For throughput testing, create a standard metric to measure latency smoothness
WT-4376 Fix a bug where table index open can race
WT-4378 Create new auto functions and cursor for session level statistics
WT-4381 Reset session statistics as on WT_SESSION::reset()
WT-4385 Prepare-conflict during a cursor scan can return the wrong key
WT-4392 A large lint change
WT-4394 Reduce Evergreen Ubuntu build variant runtime by splitting up 'make check' tests
WT-4395 Seg fault walking corrupted log with log cursor
WT-4396 When retrying after prepare-conflict, cursor unable to find a valid update
WT-4399 Fix compression with workgen's wtperf emulation
WT-4400 Fix workgen use of PRIxxx macros, needed for old C++ compilers
WT-4401 workgen: wtperf emulation: sample_interval broken with integer values
WT-4402 Add rollback support and monitor JSON output in wtperf
WT-4403 Add statistic tracking accumulated dirty cache
WT-4405 Fix cursor next and prev for prepared transactions
WT-4409 Fix workgen throttling
WT-4411 Added connection statistic for current total of cached cursors
WT-4412 wtperf coverity fixes
WT-4418 Don't keep key/value memory buffers allocated for cached cursors
WT-4419 big-endian machines incorrectly configure little-endian crc32c support
WT-4422 Don't queue clean pages for urgent eviction
WT-4427 Make WiredTiger timestamps always on and 8 bytes
WT-4440 Force a copy of the stable timestamp for clarity

4.0.4 Changelog

Security

SERVER-37135 TLSVersionCounts needs to track and report TLS 1.3

Sharding

SERVER-29160 Sharding commonly uses write concern timeouts of 15 seconds and these are timing out in migration related operations and causing BFs
SERVER-31563 Reevaluate not_allowed_on_sharded_collection_cmd.js testing
SERVER-31892 moveChunk with waitForDelete doesn't wait for majority write concern
SERVER-35323 sessionId matching ignores userId part of the lsid
SERVER-35763 lastWriteDate field can get out of sync between repl set nodes during migration
SERVER-36831 LogicalSessionCache on mongos does not correctly report active operations
SERVER-36850 Add a replication passthrough suite to detect errors in LogicalSessionsCache
SERVER-36959 _shardServerShardCollection should use afterOpTime when counting chunks on the config server
SERVER-37142 invariant failure during movePrimary during cleanup
SERVER-37330 Add sharded passthrough suites to detect errors in LogicalSessionCache
SERVER-37430 Destroy sharding task executors and AsyncRequestSenders after the PeriodicRunner is destroyed in mongod shutdown
SERVER-37496 The balancer shouldn't register a shutdown task after the process is multithreaded
SERVER-37578 Assert that a zone is associated with a shard before sharding the collection
SERVER-37657 Report the offending oplog entries if a batch contains non-increasing transaction numbers
SERVER-37918 Fast initial split algorithm produces corrupted routing info if passed unsorted zones list

Replication

SERVER-20845 re-add replSetReconfig to auditing suite
SERVER-36978 TaskRunner must ensure Client is initialized for thread before running tasks
SERVER-36979 Aborting a transaction must abort WUOW before releasing locks.
SERVER-37118 Coverity analysis defect 105000: Arguments in wrong order
SERVER-37227 Reintroduce enableMajorityReadConcern:false server parameter
SERVER-37514 Snapshot readConcern without atClusterTime should always be speculative

Query

SERVER-37058 Update with numeric field names inside an array can cause validation to fail
SERVER-37132 Negation of $in with regex can incorrectly plan from the cache, leading to missing query results

JavaScript

SERVER-30773 bsonWoCompare and bsonBinaryEqual should work with bsonelement types
SERVER-37126 Invoke runSafely for all external implscope methods

Storage

SERVER-26854 LockStats for sub-operations should not include time for previous sub ops
SERVER-36534 Don't acquire locks on oplog when writing oplog entries
SERVER-36883 support non-doc-locking storage engines in SERVER-36534
SERVER-37055 IndexBuildBlock::fail() should grab a lock
SERVER-37394 Invariant failure deadline != Date_t::max() or Invariant failure date.isFormattable()
SERVER-37618 Capture all the logs in lock_stats_suboperation_logs.js
SERVER-37662 Include backupCursor state in output of serverStatus
SERVER-37749 replSetResizeOplog command does not validate argument

Build and Packaging

SERVER-37067 Upgrade static OpenSSL to 1.1.0i
SERVER-37158 Set compatibility_version field for darwin SDK shared libraries
SERVER-37402 Improve mobile licensing text
SERVER-37407 Harmonize embedded tarball name and unpacked directory names
SERVER-37488 Install BCSymbolsMap into darwin embedded frameworks
SERVER-37584 Build failure on case-sensitive macOS file system: CommonHmac.h
SERVER-37596 Add debug info packages to mobile SDK builds
SERVER-37640 no member named 'SSLCopyRequestedPeerNameLength' in the global namespace
SERVER-37651 Update license files for MongoDB Community Edition
SERVER-37691 Compile WatchOS builds with -fapplication-extension flag
SERVER-37754 Duplicate license headers in IDL files
SERVER-37785 Rename bundle identifier in frameworks to adhere to bundle naming rules
SERVER-37852 Publish mobile artifacts on release builds

Tools

TOOLS-2069 mongoreplay does not support SCRAM-SHA-256
TOOLS-2102 Mongorestore does not check for errors decoding the oplog.bson file
TOOLS-2131 mongorestore hang in replaying oplog with --archive and --oplogReplay option

Internals

SERVER-18985 setParameter should log at level 0
SERVER-31570 Adjust mongobridge port allocations for easier debugging
SERVER-33470 Log archival message, even if successful, in hook_test_archival.py
SERVER-34986 CIDR Block That is Exempt from maxConns
SERVER-35570 Improve robustness of backup_restore.js around dropping test database
SERVER-35818 provide a stdx::variant
SERVER-35861 Remove call to dashboard_gen.py in perf.yml
SERVER-36250 Add support for optionally logging specific negotiated TLS versions
SERVER-36420 SecTrustCopyAnchorCertificates is not safe to use after a fork
SERVER-36451 ContinuousStepdown with killing nodes can hang due to not being able to start the primary
SERVER-36705 Add CocoaPod for embedded darwin frameworks
SERVER-36721 list_local_sessions.js cannot run concurrently with refreshLogicalSessionCacheNow
SERVER-36756 Log the githash of the 10gen/jstestfuzz repository when the fuzzer's self-tests fail
SERVER-36885 Make ASIO remember IOCP state when transiently out of resources
SERVER-36964 Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.
SERVER-36986 list_local_sessions.js expects non-existent session to exist when running concurrently with LogicalSessionsCache refresh
SERVER-36988 awaitdata_getmore_cmd.js times out when run concurrently with the LogicalSessionCache refresh suite
SERVER-37064 Wrap "mongod_flags" onto multiple lines for readability
SERVER-37081 Catch asio::system_errors when resolving GenericSocket
SERVER-37083 Improve Window secure allocator
SERVER-37228 Escape double quotes in hang analyzer's waitsfor graph
SERVER-37334 Strip .jar and .aar of unnecessary shared objects
SERVER-37353 Handle $slice value of LLONG_MIN gracefully
SERVER-37391 plan_cache_index_create.js should wait for index build start, rather than just createIndexes command start
SERVER-37393 Fix destructor race in ReplicaSetMonitorManager
SERVER-37410 Add standalone passthrough suites to detect errors in LogicalSessionCache
SERVER-37411 Fix bundle identifiers in embedded Info.plist
SERVER-37424 Sys-perf: change v4.0 branch batch time to once a week
SERVER-37425 Longevity tests -- increase batch time to once a year
SERVER-37464 Reduce threadCount and iterations in secondary_reads.js workload
SERVER-37467 Have collect_resource_info.py recover from transient errors.
SERVER-37477 Disable TIG daily cron for update_test_lifecycle
SERVER-37495 Change Android minimum API level to 21
SERVER-37513 Pass along JNA exceptions from MongoEmbeddedCAPI.create
SERVER-37561 Server startupWarnings show spurious empty lines
SERVER-37563 Get rid of getGlobalAuthorizationManager and unnecessary references to the authorization_manager_global library
SERVER-37583 Changes to etc/cloud_nightly.yml
SERVER-37599 Log exit code of shell-spawned processes
SERVER-37683 Change embedded iOS min version to 11.0 in CocoaPod podspec
SERVER-37684 Change embedded iOS min version to 11.0 in evergreen builders
SERVER-37685 ensure free monitoring queue preserves FIFO on messages with same deadline
SERVER-37701 Make SessionUpdateTracker include the uid portion of LogicalSessionId when tracking
SERVER-37744 Fix license path in mongoc_embedded podspec
SERVER-37755 Invalid .plist for mongoc and bson .frameworks
SERVER-37813 Switch Android publishing from Bintray to Artifactory
SERVER-37832 Fix Windows/OSX ssl_options_test unittests on v4.0
WT-3898 Keep prepared updates in lookaside until they are read
WT-3995 Enhance timestamp abort to accept more number of threads
WT-4149 Log recovery and salvage should handle removal or truncation of log files
WT-4164 Ensure test/format configures a reasonably sized cache
WT-4214 Simplify timestamp handling for timestamp abort test
WT-4217 Enhance commit and rollback to re-read prepared updates
WT-4220 Enable long running prepared support
WT-4224 Add statistics for prepared transactions
WT-4293 WT_CURSOR.remove can lose a cursor position
WT-4297 Enhance steady throughput workload
WT-4314 Don't access unmapped pages when evicting a tree
WT-4315 In rollback_to_stable, only check timestamp order if enforced
WT-4322 Enable direct I/O based crash test in make check
WT-4323 Fix race between setting transaction read_timestamp and updating global pinned timestamp
WT-4328 Use an internal session handle for schema operations in a txn
WT-4330 Change the wt utility to not use stdout if the -f option to the dump or printlog commands is specified
WT-4333 WiredTiger cursor cache doesn't handle all possible locked handle states
WT-4335 Don't fail rollback_to_stable due to sweep activity
WT-4337 Coverity #1395811 Time of check time of use
WT-4338 New WT_TXN_TS_XXX flags break #undef HAVE_TIMESTAMPS build
WT-4339 Revert part of a previous commit that simplified handle locking
WT-4340 The cursor caching layer can incorrectly release too many handle locks
WT-4341 Support million collection testing in Evergeen
WT-4342 Set session max on all configuration strings in timestamp_abort test
WT-4346 Remove prepared updates from lookaside on reading the page.
WT-4347 Limit the threads spawned by timestamp_abort with default config
WT-4348 Create all tables before spawning threads in random_directio test
WT-4351 Ensure resolving prepared transactions use updates from itself
WT-4355 Fail to find prepared updates during transaction rollback
WT-4358 Enhance the handle-lock stress test program
WT-4374 Fix a bug where a page could transition from WT_REF_LIMBO incorrectly
WT-4387 Fix ordering of referenced shared libraries in workgen
WT-4389 Update wtperf runner script to accept multiple arguments

4.0.3 Changelog

Security

SERVER-35418 Allow specifying CAs for incoming and outgoing connections separately
SERVER-36456 MongoD does not support kerberos on Windows
SERVER-36827 Warning about "No SSL certificate validation can be performed" is misleading

Sharding

SERVER-30841 Lower the amount of metadata refresh logging
SERVER-34500 Use causal consistency in database_versioning_upgrade_downgrade.js test when reading from secondary after setFCV
SERVER-35222 Crash on the config server at expired session cleanup
SERVER-35755 CollectionLock acquisition in shard_filtering_metadata_refresh.cpp can cause server to terminate on stepdown
SERVER-35773 MetadataManager directly calls into the CatalogCache
SERVER-36054 Get rid of ScopedCollectionMetadata's operator bool
SERVER-36116 Get rid of CollectionShardingState::resetAll
SERVER-36130 Migration status reports verify connection strings -- but those can change
SERVER-36164 Decouple ScopedCollectionMetadata from MetadataManager
SERVER-36332 CursorNotFound error in GetMore on a secondary with sessions
SERVER-36433 NamespaceSerializer lock should be used during drop database
SERVER-36634 Change fCV check to check for CommandNotFound in _shardsvrShardCollection and write to config after creating collections on non-primary shards
SERVER-37050 wait for replication in session_collection_auto_healing

Replication

SERVER-35616 Oplog query on initial syncing node can cause segmentation fault
SERVER-35793 Write concurrency test to verify server-wide transactions metrics tracking
SERVER-35821 readConcern:snapshot transactions need a read timestamp <= WT's all_committed point
SERVER-36127 use w:majority instead of w:2 in apply_batch_only_goes_forward.js
SERVER-36470 Prevent change_stream_failover.js to elect a new primary which is the same as old primary after old primary steps down.
SERVER-36503 Skip dry-run election during election handoff
SERVER-36539 Test that DBClientCursor sends getMore for exhaust cursor if moreToCome is not set
SERVER-36565 Killing a session with a transaction can cause the thread to throw WriteConflictError
SERVER-36746 A failed step down attempt shouldn't unconditionally reset LeaderMode to kMaster
SERVER-36846 TransactionsMetrics unit test should sleep a bit when trying to assert elapsed time > 0
SERVER-36975 Fix race condition in read_concern_snapshot_catalog_invalidation.js
SERVER-36982 Reintroduce enableMajorityReadConcern:false server parameter
SERVER-36985 Test single replica set transactions immediately after a rollbackViaRefetch
SERVER-37010 Prevent unexpected elections in initial_sync4.js and initial_sync_rename_collection*.js
SERVER-37048 Hold global intent lock whenever accessing the oplog collection pointer
SERVER-37105 Make it clear from the stack trace whether a command is running in a transaction
SERVER-37147 sessions_collection_auto_healing.js should use 2 node replica set
SERVER-37152 Increase write concern timeouts for writes expected to succeed in tags.js

Query

SERVER-13946 Consider putting skip stages below fetch stages
SERVER-36212 getMore should not enforce that session ID matches until fCV is 4.0
SERVER-36299 Implement support for exhaust cursors with OP_MSG in DBClientCursor
SERVER-36435 Increase maxTimeMS timeout in awaitdata_getmore_cmd.js
SERVER-36453 Fix race condition in aggregation_cursor_invalidations.js
SERVER-36944 applyOps does not permit unknown field names when creating a v:1 index
SERVER-36951 applyOps should work with a createIndexes command without a UUID

Aggregation

SERVER-36993 mongod crash: Invariant failure indexedOr src/mongo/db/query/index_tag.cpp 237

Storage

SERVER-34577 read_after_optime.js fails on mongoe
SERVER-34606 Test (and possibly fix) behavior around majority commit point and oplog truncation
SERVER-35657 Do not delay journal flushes when operations are waiting for oplog visibility
SERVER-35780 renameCollection across databases incorrectly timestamps metadata for secondary index builds
SERVER-36400 Explicitly destroy the client on exiting the run body of each BackgroundJob
SERVER-36531 Lock acquisition may throw despite presence of UninterruptibleLockGuard when WT tickets are exhausted
SERVER-36879 write regression test for stuck cache issue during rollback
SERVER-36961 createIndexes command should check if index already exists with weak lock
SERVER-36969 initial_sync_wt_cache_full.js takes too long to complete on slow hosts
SERVER-37002 dropping a collection with long index names via rename fails under MMAPv1
SERVER-37121 Retry timestamping secondary background index builds

WiredTiger

SERVER-19815 Make repair more robust with the WiredTiger storage engine

Operations

SERVER-27588 Warning to disable defrag of transparent_hugepages when thp is disabled
SERVER-33606 mongo shell startSession() should fail if the server doesn't support logical sessions
SERVER-34864 String-valued fields should not participate in schema change detection in ftdc
SERVER-35989 Mongo shell needs a countDocuments function

Build and Packaging

SERVER-29908 Libraries db/s/sharding and db/query/query are directly cyclic
SERVER-33911 Allow overriding global link model for specific targets
SERVER-33912 Remove --disable-warnings-as-errors from embedded builds
SERVER-34007 Relicense Embedded SDK Builds
SERVER-35078 Build embedded SDK with bitcode
SERVER-35184 Enable link-time-optimization for embedded SDK builders
SERVER-36884 Update curator version on stable branches
SERVER-36943 Build embedded targets with -Wl,-object_path_lto
SERVER-37138 Revert to always building with bitcode
SERVER-37157 Create unified darwin builder for embedded
SERVER-37251 Revert to stable channel for Android NDK setup

Tools

SERVER-30997 mongo cli --password is masked, but not when using mongodb:// connection string
TOOLS-2035 mongofiles_write_concern_mongos.js fails on server unstable

Internals

SERVER-28990 when started with --repair mongod should not try to bind to a port
SERVER-33908 Add pre and post invocation background activity hooks to CAPI implementation
SERVER-33978 References to sudo in evergreen.yml should use ${set_sudo}
SERVER-34120 scoped connection not being returned to the pool
SERVER-34711 Enable burn_in_tests to understand Evergreen task selectors
SERVER-34798 Replace subclasses of ServiceContext with decorations and flexible initialization code
SERVER-35216 Expose ReplicaSetManager refresh period to the mongo shell
SERVER-35233 Powercycle remote collection validation does not skip views
SERVER-35284 C++ "death test" unit tests should fork before constructing the test fixture, not after.
SERVER-35517 Add failpoint mechanism to the mongo shell
SERVER-35585 Make PeriodicRunner jobs be pausable/resumable
SERVER-35629 Use WiredTiger salvage API for repairing metadata files
SERVER-35630 Missing or corrupt data files should cause MongoDB to exit with an error message to run repair
SERVER-35696 Provide a way to restore idents known by WiredTiger, but unknown to the _mdb_catalog
SERVER-35731 Prevent a repaired node from re-joining a replica set
SERVER-35782 Repair should move aside unsalvageable data files and create empty ones in their place
SERVER-35784 Fix ambiguously named test fixture in commands_test.cpp
SERVER-35800 resmoke.py should retry getting a build_id and test_id from logkeeper
SERVER-35985 sessions_test and sharding_catalog_manager_test don't destroy all Clients before destroying the ServiceContext
SERVER-36019 Create script to collect resource utilization of Android application
SERVER-36069 Vendor mongoebench-compatible JSON config files from mongodb/mongo-perf into src/third_party
SERVER-36076 Create new resmoke.py test suite for running mongoebench on a desktop
SERVER-36077 Create new resmoke.py test suite for running mongoebench on an Android device
SERVER-36078 Integrate adb resource monitor into mongoebench test suite for Android
SERVER-36084 Remove sharding runtime from embedded
SERVER-36162 Powercycle - ensure internal crash command has been executed on the remote host
SERVER-36169 Resmoke: bare raise outside except in the stepdown hook
SERVER-36258 Perform construction of ServiceContext after execution of mongo initializers, not during
SERVER-36347 Make parse_zone_info.js handle new error message from ServiceContext refactor
SERVER-36351 ServiceContextMongoDTest doesn't persist TempDir correctly
SERVER-36474 Cannot initiate a replica set if free monitoring is disabled at command-line
SERVER-36621 A call to log() in capi_test.cpp does not print to stdout
SERVER-36691 Only recover orphaned collection idents when starting with repair, not after an unclean shutdown
SERVER-36702 SCons to be able to install binaries as darwin framework
SERVER-36703 SCons to be able to link against darwin frameworks
SERVER-36704 Embedded to support logical sessions the same way as standalone mongod
SERVER-36722 Add remote maven repository for embedded AAR/JAR
SERVER-36725 periodic_runner_impl_test should manually call tearDown
SERVER-36732 Wait for all secondaries to be up and electable in election handoff jstests
SERVER-36747 Add a small time delay to "jstests/ssl/ssl_client_certificate_warning_suppression.js"
SERVER-36749 Remove race in Service Executor Adaptive shutdown
SERVER-36757 Generate and extract mongoebench-compatible JSON config files to consistent locations
SERVER-36761 Add requires_replication tag to disk/repair_invalidates_replica_set_config.js
SERVER-36768 Orphaned collection recovery should allow recovered collections to be renamed
SERVER-36783 Run the secondary_reads_passthrough task of enterprise-rhel-62-64-bit-inmem on rhel62-large
SERVER-36836 v4.0 fsm workload "yield_group.js" should accept "InternalError" as a possible outcome of the group command
SERVER-36842 Core dump not generated after invariant failure in powercycle hosts
SERVER-36869 fsm capped collection checks should only make 1 query for assertions
SERVER-36897 OplogReader.hasNext can return false -> true, confusing checkOplogs
SERVER-36906 Connection state now allowed to be kConnectionStateUnknown
SERVER-36919 Add server setParameter tlsWithholdClientCertificate (bool)
SERVER-36942 Differentiate invalid hostname from invalid certificate
SERVER-36947 Enable test commands for perf micro benchmarks
SERVER-36980 Remove old aggregation fuzzer from evergreen
SERVER-36987 ChunkVersion::minorVersion truncates to 16 bit
SERVER-37013 mongoebench-compatible JSON config files attempt to read from views without using "find" command
SERVER-37041 Update eval blacklists on older branches to account for differences in tests across branches
SERVER-37042 Handle exceptions from cursor.next in ReplSetTest
SERVER-37071 Blacklist set7.js and max_doc_size.js from retryable_writes_jscore_stepdown_passthrough
SERVER-37127 Update baseline comparison for sys-perf
SERVER-37149 Remove deadlock in ScheduleBeforeStartupTest
SERVER-37156 benchRun should wait for the worker threads it spawns to exit
SERVER-37170 mongos fails to start with error 'DuplicateKey SetWiredTigerCustomizationHooks' on dynamic builds
SERVER-37216 Android Multiarch builder can't publish to mavenLocal
SERVER-37256 Add missing index_access_methods dependency to storage_wiredtiger_recovery_unit_test
TOOLS-1989 Switch evergreen intensive testing to match server priority buildversions
TOOLS-2050 oplog_rename_test fails on Windows due to access violation error
TOOLS-2099 Tools jstests failing on replica set shutdown
WT-3735 Add a workgen workload that generates a lot of page splits
WT-3736 Add statistics to measure contention on lookaside cursor
WT-3879 Disallow checkpoint from evicting metadata pages
WT-3894 Timestamp queue implementation and statistics improvements
WT-4090 Low priority reads
WT-4104 Fix test/format failure during comparing data content with berkeley db
WT-4119 Avoid restarts updating / removing during a column store scan
WT-4131 Rename lookaside to cache overflow
WT-4144 Fix rollback_to_stable with lookaside history
WT-4154 Surface the oldest read timestamp
WT-4156 Add new wiredtiger_salvage top level API
WT-4176 Expose a WT_SESSION.query_timestamp method
WT-4177 Backup cursor open should force a log file switch
WT-4185 Don't remove all lookaside entries when reading a page
WT-4211 Add automated test for long running prepared transactions
WT-4212 Update lookaside schema to handle prepared transactions
WT-4216 Use separate counters for page_swap yield and sleep
WT-4218 Change eviction to evict prepared updates
WT-4225 Automate a backup test that simulates volume snapshot via dd
WT-4231 Fix ctags index of functions with attributes
WT-4233 Change log corruption errors to warnings and truncate log
WT-4239 Don't allow checkpoints to perform insert-splits in the tree
WT-4241 GNU-stack section should never be conditionally compiled out
WT-4243 Fix lookaside sweep to not remove required entries
WT-4246 Change transaction update list to support indirect references
WT-4248 Fix checkpoints in schema_abort for slow machines
WT-4249 Attempt to discard dirty page during verify operation
WT-4251 Prepared updates cannot be discarded
WT-4252 Btree debug functions can leak scratch buffers on error.
WT-4253 Btree debug function to do blind reads doesn't handle row-store internal pages
WT-4256 Loosen check during rollback_to_stable
WT-4257 Don't assume timestamps from lookaside are aligned in memory
WT-4259 Restore ref to the previous state rather than MEM when eviction fails
WT-4261 Test salvage of out-of-sync metadata/turtle files
WT-4262 Lock deleted children in eviction of internal pages
WT-4263 Use the right tree when copying a key for a lookaside write
WT-4264 Compaction can race with page modifications
WT-4267 fixed-length column store operations can corrupt data
WT-4268 Random abort should wait until record files exist before starting timer
WT-4270 Add an operation field to know where threads hang
WT-4272 Increase startup timeout to 30 seconds for slow I/O systems
WT-4274 Fix memory leak in wt4156_metadata_salvage test
WT-4277 Make truncate in column stores more efficient
WT-4281 Shorten runtime of Python test suite
WT-4282 Don't transition pages from limbo to mem unless required
WT-4283 Restore WT_ERROR and use a corrupt flag
WT-4284 Print a verbose message in recovery on error too
WT-4285 Fix wt4156_metadata_salvage Coverity/lint complaints
WT-4286 Column store should skip end-of-table checks if there's an exact match
WT-4288 Don't let return value of closing conn overwrite WT_TRY_SALVAGE
WT-4289 Update WT_DATA_CORRUPTION to WT_TRY_SALVAGE in test_txn19.py
WT-4291 Fix test_txn19.py error detection by looking for WT_ERROR
WT-4292 Add call to testutil_cleanup to avoid memory leak
WT-4300 Setting the update timestamp can overwrite the WT_REF.addr field
WT-4301 WT_CURSOR.reserve operations can leak memory when committed
WT-4305 Add a gating variable for long running prepare support
WT-4306 Fix mode if metadata pages need eviction
WT-4308 Insert split during sync should not free blocks
WT-4321 Disable the random direct I/O test
WT-4325 Add a WiredTiger-local version of the qsort(3) call

4.0.2 Changelog

Sharding

SERVER-14394 Create initial hashed shard key chunks directly on shards
SERVER-25333 Clean up MigrationDestinationManager
SERVER-27725 Use batch insert when migrating chunks
SERVER-33417 Replace custom majority write catchup with Replication-designed write concern method in the Migration Destination Manager
SERVER-35092 ShardServerCatalogCacheLoader should have a timeout waiting for read concern
SERVER-35238 Drop the collection after removing the partially written chunks for mapReduce in mongos_manual_intervention_actions.js
SERVER-35441 drop/dropDatabase does not cleanup config.tags
SERVER-35658 session migration is too sensitive to replica set primary elections
SERVER-35676 numInitialChunks Argument is Not Validated
SERVER-35720 Allow zones to be created on non-existent collection
SERVER-35722 Create internal _shardsvrShardCollection command that runs on the primary shard
SERVER-35723 Make the collection critical section into a RAII class
SERVER-35794 Read zone information for a collection during internal shardCollection command
SERVER-35849 Remove dependency of the write commands on sharding_runtime_d
SERVER-36031 Move logic to create initial chunks and update metadata during shard collection to the primary shard
SERVER-36071 Check shardsvrShardCollection response status
SERVER-36092 Create internal command to create collection on new shard with existing uuid
SERVER-36102 Create initial chunks on appropriate shards for zoned sharding
SERVER-36322 NamespaceSerializer lock should be used for dropCollection
SERVER-36463 Bypass validation of a dummy signatures for isMaster on the unauthenticated connections
SERVER-36550 Blacklist drop_sharded_db_tags_cleanup.js in sharding_last_stable_mongos_and_mixed_shards suite
SERVER-36849 Disable new shard collection path on v4.0

Replication

SERVER-32148 make NamespaceNotFound an acceptable error for emptyCapped and convertToCapped
SERVER-32907 Turn heartbeat log verbosity back down in tests
SERVER-33243 Improve logging when a node changes its sync source
SERVER-33248 Allow choosing a sync source that we are up to date with if it has a higher lastOpCommitted
SERVER-35058 Don't only rely on heartbeat to signal secondary positions in stepdown command
SERVER-35126 Create TxnStats class and store it on the Session
SERVER-35129 Create a ServerTransactionsMetrics class and store it as a decoration on the ServiceContext
SERVER-35146 Track total number of started transactions
SERVER-35147 Track total number of committed and aborted transactions in ServerTransactionsMetrics
SERVER-35149 Track total number of open transactions in ServerTransactionsMetrics
SERVER-35151 Track total number of active and inactive transactions in ServerTransactionsMetrics
SERVER-35168 Track information about last client to run a transaction operation on session
SERVER-35173 Add autocommit value to transaction sub-document of currentOp
SERVER-35174 Add readConcern and readTimestamp to transaction sub-document of currentOp
SERVER-35239 AwaitData cursor must handle getMore from client with higher lastKnownCommittedOpTime
SERVER-35246 Ignore NamespaceNotFound errors when running collMod during checkReplicaSet in replsettest.js
SERVER-35292 Add total number of started transactions to serverStatus
SERVER-35293 Add counts of active and inactive transactions to serverStatus
SERVER-35294 Add total number of open transactions to serverStatus
SERVER-35295 Add total number of committed and aborted transactions to serverStatus
SERVER-35300 Track total transaction duration in TxnStats
SERVER-35302 Add startWallClockTime to the transaction sub-document of currentOp
SERVER-35305 Add timeOpenMicros to the transaction sub-document of currentOp
SERVER-35308 Track total active time of transaction in SingleTransactionStats
SERVER-35310 Add timeActiveMicros and timeInactiveMicros to transaction sub-document of currentOp
SERVER-35388 Improve misleading error messages for aggregation stages banned in transactions
SERVER-35428 Add the ability to add two OpDebug objects together
SERVER-35432 Add a method for printing out information about a slow transaction
SERVER-35433 Log slow transactions when they finish
SERVER-35434 Track aggregate OpDebug stats in SingleTransactionStats
SERVER-35442 stepdown global lock acqusition should use wait time, not freeze time
SERVER-35450 Add information about last client to run transaction operation to currentOp for inactive transactions
SERVER-35492 Rename TxnStats to SingleTransactionStats
SERVER-35623 Send a replSetStepUp command to an eligible candidate on stepdown
SERVER-35624 Enable election handoff by default and update affected tests
SERVER-35695 Enable transactions on inMemory storage engine with a command line flag
SERVER-35742 Update ServerTransactionsMetrics for failed commits
SERVER-35754 Avoid network errors in stopSet() in catchup_takeover_one_high_priority.js
SERVER-35766 Replication commands sent in candidate's new term can interrupt concurrent vote request
SERVER-35770 Running a multi-statement transaction when all WiredTiger write tickets are exhausted may lead to deadlock
SERVER-35951 Under PV1, ReplicationCoordinatorImpl::processReplSetFreeze for a single node RS should start an election instead of auto-winning.
SERVER-35962 buildindexes_false_with_system_indexes.js restarts nodes and should be tagged [requires_persistence]
SERVER-36128 ReplicationCoordinatorImpl::fillIsMasterForReplSet should return isMaster:false while in shutdown
SERVER-36225 Do not hold replication mutex when calling getMinValid
SERVER-36234 Fix ./jstests/replsets/initial_sync_drop_collection.js to prevent using stale heartbeat info in the test.
SERVER-36327 Use stepUp command instead of priorities as a way to designate primary nodes in tags.js
SERVER-36331 Kill running op when a transaction expires
SERVER-36461 Add 'transaction' identifier to slow transaction log output
SERVER-36592 Blacklist snapshot_read_kill_op_only.js workload from backup_restore.js lib
SERVER-36664 Use awaitReplication in read_committed_with_catalog_changes.js instead of getLastError
SERVER-36685 Reverse order of TransactionParticipant (Session in 4.0) and Client locks

Query

SERVER-26387 Replace noPassthrough/indexbg2.js with test that uses failpoints
SERVER-34846 Covered index with collated field returns incorrect result when collation not involved in match or sort
SERVER-36239 MatchExpression parser query rule

Aggregation

SERVER-36070 Aggregation with $out results in error when Auditing is enabled
SERVER-36123 Reject $out with mode: "replaceCollection" if the output collection is sharded
SERVER-36715 Pushing $sort stage to query system can leave pipeline in an unstitched state

JavaScript

SERVER-35986 Stop running eval command in parallel suite on older branches

Storage

SERVER-32994 Create a script to rebuild unique indexes in right format after a downgrade
SERVER-33740 Add Evergreen task for running powercycle against mobile storage engine
SERVER-35367 Hold locks in fewer callers of waitForAllEarlierOplogWritesToBeVisible()
SERVER-35386 Wait for the secondary's majority commit point to advance before pausing batch application in secondary_reads_timestamp_visibility.js
SERVER-35473 Mobile SE: Fix writeConflictRetry loop with map-reduce jstests
SERVER-35845 Add tag to noPassthrough/indexbg2.js
SERVER-36005 IndexCatalogEntryImpl::_catalogIsReady is unsafe to unconditionally call.
SERVER-36062 Mobile SE: Stop running parallel and concurrent suites on mobile variants
SERVER-36238 replica set startup fails in wt_cache_full.js, initial_sync_wt_cache_full.js, recovery_wt_cache_full.js when journaling is disabled
SERVER-36397 Embedded Server SDK Should Return Error When TTL Index Creation is Attempted

WiredTiger

SERVER-28734 Recover WiredTiger data files when lacking metadata, but have _mdb_catalog data

Operations

SERVER-34664 Commands that are unsupported in a transaction should error
SERVER-35180 Safeguard from setting operation session info values while in a direct client
SERVER-35617 Unpleasant db.enableFreeMonitoring "not master" error on newly launched mongod
SERVER-36294 Sum of currentActive and currentInactive not equal to currentOpen transactions
SERVER-36479 Log redaction does not show planSummary when slow queries are logged

Build and Packaging

SERVER-34393 Embedded transport layer should not depend on mongo internal code
SERVER-36686 Upgrade embedded C driver to 1.12.0
SERVER-36733 Rename embedded target SCons aliases
SERVER-36766 Add import/export macros for embedded SDK APIs

Internals

SERVER-32281 Thread pool task executor ignores errors returned from startCommand()
SERVER-33695 Include the loop name in the before and after recovery files in powertest.py
SERVER-34258 Error from mount_drives.sh on Windows
SERVER-34558 Add SSL_version to client metadata logging
SERVER-35003 Consider making the balancer threshold to always be 1
SERVER-35025 Tests depending on exact times removeShard is called are invalid
SERVER-35037 Create new concurrency suite that runs consecutive operations inside of a single transaction
SERVER-35056 Flush ready callbacks on NetworkInterfaceTL shutdown
SERVER-35100 Do not log a Python stack trace when a hook dynamic test fails
SERVER-35110 Log locations in set_feature_compatibility_version.js where fatal assertions/other errors are expected
SERVER-35215 Future::onError<ErrorCodes::Error>() to let you register a handler for a single code.
SERVER-35234 makePromiseFuture<T>() to create a bound Promise and Future
SERVER-35244 Dropping config db in 4.0.0-rc0 fails while it passes in 3.7.9 and earlier
SERVER-35537 Create version of benchRun() which can be used with embedded
SERVER-35559 Update transaction retry functions to not call abort after commit
SERVER-35592 Create Java bindings for the Embedded CAPI
SERVER-35654 rollback_transaction_table.js fails even in WT runs
SERVER-35661 Add 5 second syncdelay to rollback shutdown fuzzers
SERVER-35684 Remove promise.getFuture()
SERVER-35706 Fix race in ctor for LogicalSessionCacheImpl
SERVER-35775 Unhelpful Message String in db.getFreeMonitoringStatus()
SERVER-35919 Ensure all tests that "use transactions" perform collection drops with w:majority
SERVER-35946 Powercycle kill_mongod function should ensure the service is not in a running state
SERVER-36001 Add requires_document_locking tag to noPassthrough/indexbg2.js
SERVER-36067 Upload artifacts from running install-mobile-test target in Evergreen to S3
SERVER-36069 Vendor mongoebench-compatible JSON config files from mongodb/mongo-perf into src/third_party
SERVER-36073 Save stats from BenchRunner::finish() to a JSON file in mongoebench
SERVER-36129 Concurrency stepdown suites should wait for replication of workload setups before starting stepdown thread
SERVER-36191 Cleanup logic for converting BSONElement to strings
SERVER-36245 Create a multi-arch android variant
SERVER-36274 Re-enable --ycsb-throughput-analysis in sys-perf
SERVER-36301 build WT with HAVE_NO_CRC32_HARDWARE on RHEL 6.7 s390x
SERVER-36399 Fill in tasks for Cloud nightly tests
SERVER-36406 db._authOrThrow should prioritize user specified authenticationMechanism instead of server's mechanisms
SERVER-36448 Disable election handoff in suites that use the ContinuousStepdown hook
SERVER-36462 Add atlas user to runtime_secret.yml
SERVER-36466 Secure shutdown conditions for SpecificPool
SERVER-36623 Do not rebuild indexes before repairing databases
WT-3276 Add recover=salvage to recover from a corrupted log file
WT-3856 Create a test that runs recovery to different points of time with schema operations
WT-3943 Include full error message when a python test asserts
WT-3955 Add verbose option to log more messages on error returns
WT-3963 Add a schema intensive abort testing
WT-3968 Use compression ratio to tune page sizes
WT-4010 Simplify test/format timestamp handling.
WT-4026 Add implementation for existing file extension configuration API
WT-4134 Rework assertion that we don't discard required history
WT-4147 Log recovery should not ignore corruption outside of log records in a log file
WT-4160 Restore performance when timestamps are not in use
WT-4168 Update upgrading documentation for 3.1.0 release
WT-4169 Fix wt verify dump-pages failure
WT-4171 Enabling tree walk timing stress causes excessive slowdown
WT-4172 Add diagnostic hazard pointer checks in more places before freeing refs
WT-4174 Do not access the lookaside file in rollback_to_stable when running with in_memory=true
WT-4178 Fixes for wt_btree_immediately_durable needed for in-memory
WT-4179 Expose WiredTiger crc32c functions
WT-4182 Use conservative approach for log checksum errors
WT-4183 Extend verbose option to log more messages on error returns
WT-4186 Log recovery should detect and report corruption within log records
WT-4187 Coverity: unused value complaints
WT-4188 Coverity: unchecked return value complaints
WT-4189 Potential infinite loop in __async_flush_wait().
WT-4191 Fix Coverity static analysis errors
WT-4193 test/format snapshot-isolation search mismatch
WT-4194 Improve fairness of eviction with multiple tables
WT-4195 When encountering an illegal value, log the value that failed
WT-4196 Make log corruption checking work regardless of the machine byte order
WT-4198 Some supported MongoDB architectures don't support crc32 hardware
WT-4199 Fix an incorrect report of log corruption
WT-4201 Fix Coverity static analysis issues
WT-4206 Fix error handling in cursor close routines
WT-4207 Coverity #1394567: null pointer dereference
WT-4208 tree walks can be interrupted by locked internal pages
WT-4210 schema abort child process failing prematurely
WT-4213 Rename lock statistics that have redundant or misleading text
WT-4215 Allow recovery of backup without salvage
WT-4226 test/format LSM configurations can misconfigure prepare and timestamps
WT-4229 Lint
WT-4234 Remove documentation mention of legacy tool statlog.py
WT-4235 Fix workgen tracking of table state across workloads
WT-4242 New log file extension Python test failure

4.0.1 Changelog

Security

SERVER-35125 null pointer read access violation in SSLHandshakeManager::doServerHandshake
SERVER-36027 Enterprise build does not recognize the --redactClientLogData flag

Sharding

SERVER-33237 Optimize the Range Deleter speed
SERVER-33697 Provide sanity check on number of cached sessions
SERVER-34897 Introduce parameter to control whether MongoS should automatically retry failed find commands
SERVER-35609 Create initial chunk on primaryShard if only writing one chunk
SERVER-35632 Blacklist lagged_config_secondary.js and all_config_servers_blackholed_from_mongos.js from RHEL 6.7 s390x variants
SERVER-35691 Make all code paths returning StaleConfig error go through the StaleConfigInfo serializer
SERVER-35711 Remove unused anonymous function getPersistedMaxDbVersion() from shard server catalog cache loader
SERVER-35745 _getNextSessionMods doesn't include oplogReplay flag to query new oplog created during migration
SERVER-35938 NamespaceSerializer lock should be used for database as well as collection during createCollection
SERVER-35997 Await replication on config server after shardCollection in safe secondary reads tests
SERVER-36041 Increase the size of changelog and actionlog
SERVER-36075 Add comment to shard_identity_rollback.js explaining why we set the fCV to 4.0 on the shardsvr
SERVER-36132 Invariant that chunk migration is actually reflected in the metadata after successful commit
SERVER-36232 Refresh after chunk migration commit may not see the committed metadata

Replication

SERVER-32088 ChangeStream resumeAfter does not work on sharded collections if not all shards have chunks for the collection
SERVER-34414 Creating a role with buildsIndexes:false node hits an fassert
SERVER-34758 replSetGetStatus can deadlock with initialSyncer
SERVER-35124 Stepdown suites with MMAP V1 often fail due to flushing mmaps taking long time
SERVER-35200 Speed up failure detection in the OplogFetcher during steady state replication
SERVER-35388 Improve misleading error messages for aggregation stages banned in transactions
SERVER-35488 ReplSetTest.waitForState() should ensure node has finished closing connections
SERVER-35571 Wait until all nodes become stable before checkOplogs
SERVER-35991 Turn off chaining in set_feature_compatibility_version.js
SERVER-35992 Secondary should have no vote in SecondaryReadsTest

Query

SERVER-34789 Using resume token from an 'invalidate' notification with 'resumeAfter' should error
SERVER-34933 pcre verb support
SERVER-35693 Parsing of $in takes quadratic time due to O(n^2) boost::flat_set constructor
SERVER-35751 Make kill_own_ops.js more robust
SERVER-35851 Consider checking whether the array passed to $in is already sorted before calling std::sort
SERVER-35929 Possible use-after-free when reloading the view catalog due to an invalidation

Aggregation

SERVER-35028 Add change stream notifications for collection drop and rename
SERVER-35029 Add change stream notification for database drop
SERVER-35084 change_stream_enforce_max_time_ms_on_mongos.js expects getMore to schedule follow-up getMores
SERVER-35634 view_catalog_cycle_lookup.js should not always assert that finds on views will succeed
SERVER-35961 Remove uninitialized count variable in MapReduce command

Catalog

SERVER-35563 The UUIDCatalog onCreateCollection observer should atomically unregister and re-register catalog entries

Storage

SERVER-32509 Mobile SE: Implement error reporting for unsupported startup options
SERVER-32997 Mobile SE: Design and implement multi-reader or single-writer concurrency
SERVER-33605 Mobile SE: Disable capped collections
SERVER-33651 Mobile SE: Use full synchronous mode for SQLite writes
SERVER-34002 readConcern_snapshot.js should wait for writes to be majority-committed on secondaries before reading
SERVER-34113 Remove all support for snapshot reads outside of multi-document transactions
SERVER-34129 Don't hold database or collection locks during oplog truncation
SERVER-34579 Do not populate indexDetails for mobile storage engine
SERVER-34713 Progressively declining dropDatabase performance
SERVER-35085 repair can cause spurious NamespaceNotFound errors with concurrent initial sync operations
SERVER-35317 restartCatalog problematically discards minVisibleSnapshot data
SERVER-35398 Mobile SE: Remove code for capped collection
SERVER-35671 DatabaseHolderImpl::closeAll can leave catalog in an incomplete state
SERVER-35704 Tag readConcern_snapshot.js with 'uses_transactions'
SERVER-35789 check for index catalog isready mismatch for multi-doc txns
SERVER-35859 Disable rocksdb buildvariant
SERVER-35994 Reduce CPU load in secondary_reads_unique_indexes.js test
SERVER-36006 multiInitialSyncApply should consider setting a read timestamp of kNoTimestamp
SERVER-36025 RestartCatalogCommand can attempt to reinitialize oplog pointers on standalones
SERVER-36167 Add pretty printer for WT flags members

GridFS

SERVER-35361 filemd5 command fails to safely clean up PlanExecutor after manual yield

Operations

SERVER-27264 With net.ssl.allowConnectionsWithoutCertificates: true, allow disabling no client certificate log warnings
SERVER-32064 A logical session ID should be included in all command requests from the mongo shell
SERVER-34160 Mongo client run buffered command when terminated.
SERVER-35758 Mongo shell prompt errors when running transactions after overriding "db"
SERVER-35903 Free monitoring doesn't allow disabling from the shell without enabling it first
SERVER-36010 Change log messages for Windows stacktraces to use error() or severe() rather than log()
SERVER-36088 Replica set connection strings trigger access violation on 4.0 shell + Windows

Build and Packaging

SERVER-33000 Platform Support: add Ubuntu 18.04
SERVER-33996 Don't apply self signing until after bundling the SDK.
SERVER-35600 Add support for armv7-k
SERVER-35901 Add toolchain path to lint task
SERVER-36039 Support LibreSSL 2.7 on FreeBSD
SERVER-36082 Don't link getShardMap command into embedded

Tools

TOOLS-2058 mongoreplay does not show OP_MSG commands
TOOLS-2062 Support zlib compression in mongoreplay
TOOLS-2075 mongoreplay always replays to secondary

Internals

SERVER-33817 Powercycle test using kill mongod
SERVER-34563 Connect via SRV record fails if the returned record resides in subdomain
SERVER-34793 Add call to BF suggestion server on failed task completion
SERVER-34810 Session cache refresh can erroneously kill cursors that are still in use
SERVER-34956 big_object1.js is not resilient to unexpected stepdowns
SERVER-34984 Update major_version_upgrade.js test to call setFCV to the latest fCV
SERVER-34996 Save console_output & console_screenshot from aws_ec2.py as artifacts in evergreen.yml
SERVER-35101 Handle differently a badly formed bindIp argument
SERVER-35165 Disable and re-enable update_test_lifecycle Evergreen task on the 4.0 branch
SERVER-35188 Typo in ServiceLiason* types
SERVER-35263 Add FSM workloads for testing atomicity and isolation of updates inside a transaction across multiple collections and databases
SERVER-35312 Update system_perf.yml and perf.yml to compare to 3.6.5 baseline for master and 4.0
SERVER-35313 CleanupConcurrencyWorkloads resmoke hook needs to handle the balancer
SERVER-35383 Increase electionTimeoutMillis for the ContinuousStepdown hook used in stepdown suites
SERVER-35389 Remove dead code from old FSM suite
SERVER-35506 The Powercycle wait_for_mongod_shutdown function should ensure the mongod process is no longer running
SERVER-35523 FSMWorkloadTestCase erroneously sets TestData.sameDB=true and TestData.sameCollection=true
SERVER-35550 Bridge should not block listener while making outbound connections
SERVER-35578 Switch package tests to new package testing VPC
SERVER-35588 powertest.py should call replSetReconfigure command only after successful replSetGetConfig
SERVER-35627 Repair should re-create missing collection data files from the existing metadata
SERVER-35664 Run the android embedded tests on api24 system images
SERVER-35668 Avoid moving concurrency tests to small instances on arm64
SERVER-35675 find_by_uuid_and_rename.js should not fail from QueryPlanKilled when yielding during a collection rename
SERVER-35692 Add support to an optional re-registration bool in metrics response
SERVER-35702 Stop running the agg and update fuzzer on macOS
SERVER-35724 Remote EC2 hosts which are not accessible via ssh should fail with system error
SERVER-35727 make the embedded sdk compile task in to a multi-task task group.
SERVER-35834 Fix compile errors in dns_name_test on Microsoft compilers
SERVER-35850 Update filename suffix to v4.0-latest for nightly builds
SERVER-35858 Error in call BF Suggestion service
SERVER-35908 Shutdown service entry point in mongoed before shutting down embedded
SERVER-35990 Update evergreen_task_timeout.py REQUIRED_BUILD_VARIANTS list
SERVER-35993 read_concern_uninitiated_set restarts nodes so must not allow ephemeral storage
SERVER-36055 Mobile SE: Compact returns wrong error code on mobile
SERVER-36144 want to add an empty cloud_nightly.yml file
TOOLS-1991 Build tools with Go 1.10.1
WT-3839 Document the undefined behavior when a range truncate overlaps with inserts
WT-3917 Enhance WT_CURSOR::reserve documentation around commit visibility
WT-4024 Fix a race between split and next/prev
WT-4048 Generalize timing_stress_for_test split functionality
WT-4067 Enhance LSM to not pin as much history in cache
WT-4101 Don't abort the eviction server during session verify when oldest_timestamp is held back
WT-4111 Improve checkpoint scrubbing algorithm
WT-4125 Ensure that subsequent checkpoints with stable timestamp don't read too much
WT-4133 Coverity 1393445, 1393446 Dereference before null check
WT-4136 Add a new timing stress flag that yields during tree search
WT-4138 Add an option to timeout waiting for space in the cache
WT-4139 rename the cursor restart statistic to match implementation
WT-4140 Cursor walk limits quick eviction page selection unnecessarily.
WT-4141 Enhance checkpoint with timestamps to unblock eviction sooner
WT-4143 Use WiredTiger.turtle.set if it exists but WiredTiger.turtle does not
WT-4145 Only include the checkpoint timestamp during checkpoints
WT-4146 Coverity 1393639, unused variable
WT-4152 Save return value for later comparison in transaction code
WT-4163 Lint

Back

Downgrade 4.0 Sharded Cluster to 3.6

Release Notes for MongoDB 3.6

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4.0.28 Changelog

Security

Sharding

Replication

Aggregation

Storage

Internals

4.0.27 Changelog

Sharding

Replication

Query

Storage

Build and Packaging

Internals

4.0.26 Changelog

Security

Sharding

Replication

Query

Aggregation

Build and Packaging

Internals

4.0.25 Changelog

Sharding

Write Operations

Build and Packaging

Internals

4.0.24 Changelog

Replication

Query

Operations

Build and Packaging

Internals

4.0.23 Changelog

Sharding

Replication

Query

Storage

Operations

Internals

4.0.22 Changelog

Sharding

Replication

Query

Aggregation

Storage

Operations

Build and Packaging

Internals

4.0.21 Changelog

Security

Sharding

Replication

Query

Aggregation

Storage

Operations

Build and Packaging

Internals

4.0.20 Changelog

Sharding

Replication

Query

Storage

Operations

Build and Packaging

Internals

4.0.19 Changelog

Sharding

Replication

Query

Write Operations

Aggregation

Storage

Operations

Internals

4.0.18 Changelog

Security

Sharding

4.0 Changelog