3.6 Changelog

3.6.23 Changelog

Query

SERVER-40361 Reduce memory footprint of plan cache entries

Internals

SERVER-43973 jsTestName() should return a unique name for each thread in the parallel suite
SERVER-46686 Explain does not respect maxTimeMS
SERVER-50267 Set output limit for 'rawMongoProgramOutput()'
SERVER-52969 Disable Powercyle on non-master branches
SERVER-53992 Remove calls to detect-outliers from performance tasks
SERVER-54134 Ignore newer mongo versions on older branches of setup_multiversion_mongodb.py
TOOLS-2803 [v3.6] Add --config option for password values

3.6.22 Changelog

Sharding

SERVER-53182 [v3.6] Omit "versions" from {shardingState: 1} command when not running as a --shardsvr

Replication

SERVER-33747 Arbiter tries to start data replication if cannot find itself in config after restart
SERVER-52680 Removed node on startup stuck in STARTUP2 after being re-added into the replica set
SERVER-53026 Secondary cannot restart replication
SERVER-53345 Excuse arbiter_new_hostname.js from multiversion tests

Query

SERVER-32960 $mod has inconsistent rounding/truncation behavior

Storage

SERVER-52902 Remove assertion !haveJournalFiles() at dur_journal.cpp:265

Build and Packaging

SERVER-32437 Platform Support: add Amazon Linux 2
SERVER-52854 Fix package test on debian based system in 3.6

Internals

SERVER-50445 Return the value as double when NumberLong subtraction overflows in ExpressionSubtract
SERVER-50891 mongod 3.6.20-rc2 core dumps if dbpath DNE or perms block
SERVER-52654 new signing keys not generated by the monitoring-keys-for-HMAC thread
SERVER-52806 deb install files assume systemd

3.6.21 Changelog

Sharding

SERVER-51808 invariant failure: readConcern level != Available
SERVER-51885 Blacklist balancing_sessions_collection.js from sharding_csrs_continuous_config_stepdown

Replication

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-49991 Alias printSlaveReplicationInfo() shell helper
SERVER-50116 Forbid oplog writes when replication is enabled
SERVER-50640 listCommands should return "isMaster" alias in addition to "hello" command name

Query

SERVER-51083 Problem with regex index bounds
SERVER-51120 Find queries with SORT_MERGE incorrectly sort the results when the collation is specified

Storage

SERVER-34243 listCollections should not require a MODE_S database lock

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

Internals

SERVER-45624 Pre-split and distribute chunks of sessions collection
SERVER-50123 Record number of physical cores on all platforms
SERVER-50216 Adjust sys-perf frequencies
SERVER-50605 Add {logMessage: "msg"} test-only command
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-51303 Lookup stage followed by $match on type uses wrong field in matching condition
TOOLS-2590 [v3.6] sslAllowInvalidHostnames bypass ssl/tls server certification validation entirely

3.6.20 Changelog

Replication

SERVER-48967 Prevent replicated writes on empty namespaces on secondaries
SERVER-49990 Alias setSlaveOk() and getSlaveOk() shell helpers
SERVER-50039 Timing error in dbadmin.js test

Query

SERVER-36910 Reduce severity or remove log message for PlanExecutor::DEAD error during find
SERVER-39392 Invariant in PlanStage::dispose always evaluates as true
SERVER-48993 explodeForSort can produce incorrect query plan

Aggregation

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

Storage

SERVER-49449 index_restart_secondary.js is not compatible with storage engines without support for persistence

Operations

SERVER-48244 Shell should not hard-code the allowed explain levels and let the server reject it instead

Build and Packaging

SERVER-33000 Platform Support: add Ubuntu 18.04
SERVER-42042 Warn or fail early on dynamic builds with toolchain compiler and tcmalloc
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-41600 IndexCatalog::refreshEntry should invalidate the index from the CollectionInfoCache
SERVER-43233 Add ability to request only specific attribute(s) for the LDAP groups
SERVER-45202 Improve Command alias infrastructure
SERVER-47930 Ubuntu 20.04 - ldap_authz_authn.js fails to load test certificate
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-49404 Enforce additional checks in $arrayToObject
SERVER-50180 Fix User lifetime management in AuthorizationManager::acquireUserForSessionRefresh

3.6.19 Changelog

Sharding

SERVER-46487 The mongos routing for scatter/gather ops can have unbounded latency
SERVER-47913 Redact sharding messages in split chunk and distributed lock acquisition

Replication

SERVER-45610 Some reads work while system is RECOVERING
SERVER-47695 Write commands run by threads that can survive rollback can fail operationTime invariant in ServiceEntryPoint

Query

SERVER-40805 Indicate the reason for replanning in the log file
SERVER-47994 Fix for numerical overflow in GeoHash

Storage

SERVER-46398 Suggest explicit dbpath when starting mongod on macOS and the default dbpath isn't found

Operations

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

Build and Packaging

SERVER-42042 Warn or fail early on dynamic builds with toolchain compiler and tcmalloc
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

Internals

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-47256 Update listed maintainer for repo package files
SERVER-47686 Upgrade static OpenSSL to 1.1.1g
SERVER-47798 Audit isMaster response validation for mongod and mongos
SERVER-48032 Update references of community mailing-lists to MongoDB Developer Community Forums
SERVER-48657 Use evergreen module to control signal processing in perf projects
SERVER-49142 Validate correct field name in RoleName::parseFromBSON()
SERVER-49335 publish_packages should use barque API key
WT-5119 Birthmark records can be read as normal updates if reads race with checkpoints
WT-5150 LAS sweep is not removing the entries that are no longer required
WT-5196 Data mismatch failures with test/checkpoint after enabling LAS sweep
WT-5376 WT_UPDATE.type field can race with visibility checks when returning key/value pairs
WT-5587 Limit how many checkpoints are dropped by a subsequent checkpoint

3.6.18 Changelog

Security

SERVER-46834 Use monotonic time in UserCacheInvalidator

Sharding

SERVER-29153 Make sure replica set nodes agree on which node is primary before doing writes in ShardingTest initialization
SERVER-33597 Make allow_partial_results.js, return_partial_shards_down.js start shards as replica sets
SERVER-44130 Flip order of assert.lte arguments in logical_time_metadata.js
SERVER-45770 Add to information contained in logfile about "moveChunk.to"
SERVER-46466 Race with findAndModify retryable write and session migration

Replication

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-45178 Rollback via refetch can cause rollback to happen successfully w/o updating the rollback id.

Query

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

Storage

SERVER-45289 Conditional jump or move depends on uninitialised value(s) in validate_adaptor.cpp

Operations

SERVER-34199 "timing" section of serverStatus can have large impact on ftdc retention
SERVER-46024 Collect /proc/vmstat swap statistics in FTDC

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
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-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-40047 Test for blocking queue should not test for non-guaranteed condition
SERVER-40305 Add diagnostic logging to max_time_ms.js
SERVER-42278 Log SockAddrs produced during LDAP connection establishment with manually derived sizes
SERVER-42525 Single-node replica sets shouldn't wait for electable caught up secondaries during shutdown
SERVER-43349 Incorrect serialization for $elemMatch $not $ne
SERVER-44325 Add polyfill for certificate chain verification
SERVER-44435 Allow x509 authorization to be selectively enabled based on the CA
SERVER-44868 Initialsync logkeeper and logkeeper-short tests should pass snapshot ID and dataset link respectively to dsi(sys-perf)
SERVER-45156 SockAddr constructor should take sockaddr, not sockaddr_storage
SERVER-45472 Ensure RoleGraph can serialize authentication restrictions to BSON
SERVER-45766 Remove "requires" from the server yaml
SERVER-45867 Use latest version of signal processing
SERVER-45935 [3.6] WT error handler incorrectly prints "An unsupported journal format detected"
SERVER-46082 Use bin/analysis.py for performance projects
SERVER-46174 Free peer certificate in SSL_get0_verified_chain polyfill
SERVER-46754 Use new repobuilder service
SERVER-46766 Teardown clusters after every perf run
SERVER-46899 Fix tcmallocReleaseRate parameter in 4.0 and 3.6
SERVER-47063 Upgrade static OpenSSL to 1.1.1e
SERVER-47232 Ensure availability of Python ldap libraries

3.6.17 Changelog

Replication

SERVER-34876 initial_sync_with_write_load.js needs to await initial sync completion before reading oplog
SERVER-45396 fix the "me" field in isMaster responses when using splithorizon

Query

SERVER-42565 Aggregations and find commands sort missing fields differently

Aggregation

SERVER-42756 $multiply operator may return with or w/o an error depending on whether pipeline optimisation is enabled
SERVER-43764 Add more testing for special values in DoubleDoubleSummation
SERVER-44174 $push and $addToSet should restrict memory usage
SERVER-44733 Change stream should throw ChangeStreamFatalError if a single shard cannot be targeted for updateLookup
SERVER-44869 Add query knob to control memory limit for $push and $addToSet

Storage

SERVER-44796 Adjust nojournal startup warning to be more compelling

Build and Packaging

SERVER-37772 Platform Support: Add Community & Enterprise RHEL 8 x64
SERVER-44641 Platform Support: Remove Enterprise RHEL 7 zSeries and SLES 12 zSeries from 3.6

Internals

SERVER-34844 Relax expectations in apply_batches_totalMillis
SERVER-35099 Increase wtimeout in get_last_error.js even more
SERVER-35382 _isSelf command needs to be marked requiresAuth false
SERVER-38002 Upgrade Pcre to at least 8.42
SERVER-39131 Refactor storage engine lock file support
SERVER-42697 Expose tcmalloc_release_rate via setParameter
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-44568 Update the embedded version of the server's timezone data file to tzdb-2019c
SERVER-44828 Correct logic to re-compute dependencies after absorbing a $sort into query layer
SERVER-45104 [v3.6] Fix spill_to_disk.js
SERVER-45372 Blacklist versions without majority read concern for change_streams_update_lookup_shard_metadata_missing.js
WT-4636 Fix strace in syscall test
WT-5042 Reduce configuration parsing overhead from checkpoints
WT-5120 Checkpoint hangs when reconciliation doesn't release the eviction generation
WT-5135 Change lookaside file inserts to use cursor.insert
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

3.6.16 Changelog

Security

SERVER-44320 Allow zoned sharding commands to be authorized via actiontypes

Sharding

SERVER-42914 Implement random chunk selection policy for balancer for use in concurrency_*_with_balancer workloads

Replication

SERVER-43193 Always disable document validation on secondaries
SERVER-44675 server_status_metrics.js fails due to racy repl.buffer.count metric in serverStatus

Query

SERVER-44571 Documents involved in SERVER-44050 corruption scenario cannot be updated or deleted after upgrade

Storage

SERVER-44584 (3.6) Rewriting updates as modifications incorrectly considers logging state

Build and Packaging

SERVER-37769 Platform Support: Add Community & Enterprise SLES 15 x64
SERVER-44392 Platform Support: Remove zSeries ubuntu 16.04

Internals

SERVER-35463 Mark listCommands as pre-auth
SERVER-38002 Upgrade Pcre to at least 8.42
SERVER-40669 install_compass should not explicitly use python3
SERVER-42961 Fix Split Horizon testing on SLES
SERVER-43085 Regenerate all testing certificates with SHA-256 instead of SHA-1
SERVER-44140 Use signal processing without DSI
SERVER-44319 Skip keyfile check in replica_sets/auth1.js on windows
SERVER-44322 Fail gracefully when the storage engine has failed to initialize on v3.6
SERVER-44651 Update signal processing version
SERVER-44727 detect-changes should not be called via run-dsi

3.6.15 Changelog

Security

SERVER-43653 Upgrade static OpenSSL to 1.1.1d
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-34760 Retries of _configsvrShardCollection may not send setShardVersion to primary shard
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-38205 Optimize splitVector for the jumbo-chunk case
SERVER-42783 Migrations don't wait for majority replication of cloned documents if there are no transfer mods
SERVER-42793 Autosplit size tracker random initial value is too low
SERVER-44182 Blacklist major_version_check.js from sharding_last_stable suite in 3.6

Replication

SERVER-37846 writeConcern can be satisfied with an arbiter if the write was committed
SERVER-38685 Startup warning if In-Memory SE is used and writeConcernMajorityJournalDefault is true
SERVER-38994 Step down on SIGTERM
SERVER-39310 Check canServeReadsFor in getMores
SERVER-40335 Don't wait for election handoff in ReplSetTest.stopSet()
SERVER-40355 rs.config that contains an _id greater than the number of nodes will crash
SERVER-42155 Indicate term mismatches when readConcern times out
SERVER-43109 Explicitly state nodes in awaitReplication in do_not_advance_commit_point_beyond_last_applied_term.js
SERVER-43673 Blacklist toggle_feature_compatibility.js from backup_restore.js on 3.6
SERVER-43708 Wait for nodes to become secondary in last_vote.js and slave_delay_clean_shutdown.js

Query

SERVER-39019 $elemMatch $ne serialization is incorrect, doesn't roundtrip
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-43074 Do not use a global variable to encode 'multikeyPath' information when writing out catalog documents
SERVER-43699 Find $mod can result in UB

Aggregation

SERVER-43034 Special values handling is inconsistent in DoubleDoubleSummation

Storage

SERVER-42441 renameCollectionForApplyOps should always rename the target out of the way if it exists
SERVER-42652 Fix issue with rename collection
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

WiredTiger

SERVER-35271 4.0 rc0 upgrade from 3.6.5 logs "unsupported WiredTiger file version" error
SERVER-39004 Introduce a quota mechanism for the overflow file
SERVER-40575 Improve error message when starting MongoDB 3.6 on unclean shutdown of MongoDB 4.0

Operations

SERVER-28604 Log when a cursor is reaped for exceeding the timeout
SERVER-40537 Log error code 261 for TooManyLogicalSessions to the mongodb.log
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

Internals

SERVER-25025 Improve startup time when there are tens of thousands of collections/indexes on WiredTiger
SERVER-42075 Add DSI module to perf.yml
SERVER-42178 Disable Split Horizon HOSTALIAS testing on SLES
SERVER-42706 Test seeding secondary without sessions or transactions table
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-43151 Error in aggregation assertion at value.cpp:1368
SERVER-43240 Add DSI and mongo-perf modules to MMAP build variants in v4.0 mongo
SERVER-43634 Report different errors for missing scons and fail to import scons
SERVER-43922 ldap_authz_lib.js uses runNonMongoProgram on 3.6
SERVER-44064 Perform explicit cast on MessageCompressorManager parameter
SERVER-44183 Failure to listen on an asio socket should be fatal
SERVER-44184 De-duplicate resolved addresses on v3.6
SERVER-44312 Specify evergreen auth in performance tests for signal processing
WT-4869 Stop adding cache pressure when eviction is falling behind
WT-4881 Soften the restrictions on re-entering reconciliation
WT-4893 Fix a race between internal page child-page eviction checks and cursors in the tree
WT-4898 Don't allow the eviction server to reconcile if it's busy
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

3.6.14 Changelog

Security

SERVER-38945 SSL performance regression
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-36394 mongos should reset chunk size tracking information when autosplit = false or splitvector returns too few split points
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-41859 logical_time_metadata.js shouldn't assume lastApplied opTime equals $clusterTime
SERVER-41867 CatalogCache::_scheduleDatabaseRefresh/_scheduleCollectionRefresh can try to grab _mutex it already owns
SERVER-41869 Reverse mutex acquisition order in CatalogCache::_scheduleCollectionRefresh
SERVER-42793 Autosplit size tracker random initial value is too low

Replication

SERVER-38659 Race condition in IsMasterIsFalseDuringStepdown unittest
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-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-41065 Make agg evaluate() thread safe by passing 'Variables' as a parameter
SERVER-41829 findAndModify ignores filter expressions that are not objects

Storage

WiredTiger

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

Operations

SERVER-36099 FTDC for mongos is unworkably large for large installations

Build and Packaging

SERVER-36043 systemd unit for mongod starts before multi.user target
SERVER-40563 Our init scripts check /proc/[pid]/stat should validate that (${procname}) is the process' command name.
SERVER-41424 scons should fail early if invoked with wrong Python interpreter
SERVER-41443 Update Enterprise License
SERVER-41743 Update MSI inclusions for 3.6
SERVER-42089 Platform Support: Remove Enterprise RHEL 6.7 zSeries from 3.4 and 3.6
SERVER-42109 Add Ubuntu 14.04 to v3.6
SERVER-42233 Bump Windows package dependencies
SERVER-42603 Recent service file change may cause cyclic dependencies

Internals

SERVER-26626 In external_auth_WT JSTests, ensure that Saslauthd has fully started before continuing test
SERVER-35067 Blacklist explain2.js from retryable writes jscore stepdown suite
SERVER-37984 Upgrade yaml-cpp >= 0.6.0
SERVER-38141 Incorrect usage of MONGO_CONFIG_HAS_SSL_SET_ECDH_AUTO prevents enabling of elliptic curve auto negotiation
SERVER-39642 Decrement egress counter when scoped connection not returned to the pool
SERVER-40156 Initial implementation of Split Horizon
SERVER-40643 Add tests for replSetConfig and replSetInitiate with Split Horizon
SERVER-40645 Add tests for SNI/TLS behavior of Split Horizon
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-41016 Calculate deltas for updates to large documents
SERVER-41075 Remove 'mongo/repl/replication_coordinator.h' from op-context inclusion path
SERVER-41148 FTDC is calling boost::filesystem without passing an error_code parameter
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-41401 patch_files.txt doesn't distinguish between enterprise and community files
SERVER-41442 Fix second race in umask.js
SERVER-41546 SysV init scripts should verify PIDfile exists instead of failing
SERVER-41624 Fix Split Horizons on Legacy Transport in v3.6
SERVER-41680 Propagate ${branch_name} Evergreen expansion to fuzzer invocation
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-41833 Update README license text
SERVER-41967 Symlink /data to Z instead of C
SERVER-42178 Disable Split Horizon HOSTALIAS testing on SLES
SERVER-42228 LoggerRuntimeConfigError exceptions can lead to background dbhash thread running until Evergreen task times out
WT-4352 Resolve birthmarks during eviction in more cases
WT-4421 Add a way to calculate modify operations
WT-4693 WT_CONNECTION::reconfigure should not require quiescence when downgraded
WT-4706 Add a statistic to track the lookaside table size
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-4776 Modify operations should be equivalent to updates
WT-4794 Mark lookaside history resolved in all paths
WT-4803 Implement file_max configuration for Cache Overflow mechanism
WT-4823 Add check for uninitialised lookaside resources
WT-4848 Fix perf regression when calculating differences

3.6.13 Changelog

Security

SERVER-40226 Upgrade static OpenSSL to 1.1.1b
SERVER-40393 Disable SSL_MODE_RELEASE_BUFFERS in ASIO

Sharding

SERVER-36004 SessionUpdateTracker should ignore no-op entries for pre/post image oplogs
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-40136 The background key generator can remain disabled on fCV upgrade after a downgrade

Replication

SERVER-35636 Renaming collection for applyOps needs to check completeness of target namespace
SERVER-37065 Report ismaster:false in isMaster command response immediately upon learning of a new term
SERVER-39831 Never update commit point beyond last applied if learned from sync source
SERVER-40628 Initial sync could fail under replsetprio1.js settings
SERVER-40788 Improve logging around replication catchup
SERVER-40977 mmapv1 and ephemeralForTest variants should exclude tests with requires_majority_read_concern tag
SERVER-41081 do_not_advance_commit_point_beyond_last_applied_term.js must wait for Node E to reach stopReplProducerOnDocument failpoint
SERVER-41247 do_not_advance_commit_point_beyond_last_applied_term.js must not run with periodic noop writer on
SERVER-41342 read_committed_stale_history.js must perform continuous writes to ensure majority commit point propagates to secondary

Storage

SERVER-16571 Use Actual Memory Constraint vs. Total System Memory When They Differ
SERVER-30356 Improve error reporting for validation
SERVER-41213 Unique background index builds may produce inconsistent keys

Operations

SERVER-39820 Add the client IP address to the successful authentication log message
SERVER-40866 Use JSON.stringify() to serialize string in tojson()

Build and Packaging

SERVER-37765 Platform Support: Remove Ubuntu 14.04
SERVER-37774 Platform Support: Remove Enterprise Ubuntu 16.04 PPCLE
SERVER-40242 Update banner inclusions for vendored tools
SERVER-40491 Update Debian 8 image for package test

Internals

SERVER-37382 printShardingStatus.js races with ShardingUptimeReporter thread
SERVER-38984 Attach IDs to users
SERVER-39746 System-Performance: Write project in runtime.yml
SERVER-40052 Shutdown in mongos can trigger BatchWriteOp invariant
SERVER-40165 generate wtimeout deadlines with the precise clock
SERVER-40514 Race between BufferedHandler.close() and BufferedHandler.flush() leads to resmoke.py hanging with --log=buildlogger
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
SERVER-41169 Most powercycle testing for Linux was removed from Evergreen
TOOLS-2068 mongodump oplog delay

3.6.12 Changelog

Sharding

SERVER-35219 Regain MongoDB balancer performance with sessions
SERVER-39847 Migrating session info can trigger fassert when destination shard has transaction history truncated by oplog
SERVER-39932 SessionRuntimeInfo memory is not being released

Replication

SERVER-37255 replSetReconfig with concurrent election can trigger invariant
SERVER-38722 CollectionCloner should handle QueryPlanKilled on collection drop
SERVER-39490 opWriteConcernCounters can cause undefined behavior due to overflow
SERVER-39641 Blacklist max_time_ms.js from read concern linearizable passthrough
SERVER-39758 double_rollback.js should reliably wait for node 0 to complete rollback
SERVER-40039 Increase assert.soon timeout in initial_sync_invalid_index_spec.js

Query

SERVER-38764 External sorter should use 64-bit integers for file offsets

Aggregation

SERVER-39394 Views collation check should traverse through nested $lookup pipelines
SERVER-39487 Aggregation operator $sqrt output for NumberDecimal is the same as $exp

Storage

SERVER-17010 Reduce file handle usage in File based Sorter
SERVER-39773 decrease number of updates in rollback_wt_cache_full.js

Operations

SERVER-37722 Quiet mode does not suppress connection end events
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

Tools

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

Internals

SERVER-36231 Mongos write path doesn't look for retryable write concern errors
SERVER-36437 The dbstats command should lock the database in MODE_IS instead of MODE_S
SERVER-36750 blacklist memory.js on ppc64le in memory variants
SERVER-37620 Improve watchdog_test reliability
SERVER-38644 Guard against ephemeral files disappearing during umask test
SERVER-38697 Powercycle kill by PID might try to kill the wrong process
SERVER-38789 Accept connection failure on Windows in ssl_alert_reporting.js
SERVER-39056 Further refine readWriteAnyDatabase
SERVER-39058 Synchronize user set modification in AuthorizationSession with Client
SERVER-39822 Improve watchdog_test.exe test reliability
SERVER-40063 jstestfuzz_sharded_continuous_stepdown.yml is running with a 1-node CSRS on the 3.6 branch
SERVER-40076 Tag JavaScript tests with the reason they're unable to run in Atlas
WT-4324 Ensure checkpoints rewrite pages with data in the future
WT-4615 Sync backup file before returning backup cursor

3.6.11 Changelog

Security

SERVER-36606 Remove size limits on BSON audit events

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-36901 sh.status() "Last reported error:" is actually 5th Latest error message
SERVER-37339 Sharding state is set to initialized on Grid before sharding components are fully initialized
SERVER-37624 Sessions never expire when you change value of localLogicalSessionTimeoutMinutes
SERVER-38192 Ignore duplicate key error from refreshLogicalSessionCacheNow
SERVER-38344 Early release of distributed database locks during initial collection sharding results in migration/split failures
SERVER-38387 agg_out.js concurrency workload always fails to shard the output collection
SERVER-38784 Blacklist verify_sessions_expiration_sharded.js from the sharding_last_stable_mongos_and_mixed_shards suite.
SERVER-39030 Wrong info logged by splitVector

Replication

SERVER-32146 Log slow oplog entry application
SERVER-35608 Invariant that term from lastAppliedOptime is never greater than our current term
SERVER-37274 commands_that_accept_wc tests can give secondaries priority zero
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-38200 Fix ./jstests/replsets/initial_sync_oplog_hole.js to prevent using stale heartbeat info in the test.
SERVER-38647 backup_restore_rolling.js can fail due to stepdown
SERVER-38998 Create serverStatus metrics for readConcern and writeConcern
SERVER-39142 ServerWriteConcernMetrics must lock _mutex before modifying members
SERVER-39267 Guard opWriteConcernCounters behind flag
SERVER-39286 server_write_concern_metrics.js must use requires_journaling tag

Query

SERVER-38275 Handle explains without namespaces
SERVER-39472 Backport changes to apply_ops_concurrent_non_atomic.js to account for HMAC key inserts in 3.6 and 4.0.

Aggregation

SERVER-31098 Wrong ns in system.profile for aggregation query
SERVER-39109 mongod crash: Invariant failure !_exec src/mongo/db/pipeline/document_source_cursor.cpp 295
SERVER-39166 $graphLookup should force a pipeline to split in sharded cluster
SERVER-39322 Backport timelib fix for incorrect snprintf invocation with static buffer

Storage

SERVER-35732 Hyphenated database names do not work with dbStats.fsUsedSize / TotalSize
SERVER-38779 Build a mechanism to periodically cleanup old WT sessions from session cache
SERVER-38801 Cope with large BSON blobs in queryable's listDirectory call.

Operations

SERVER-37155 Improve the LDAP server logging

Build and Packaging

SERVER-33958 When using thin archives the --cache=nolinked mode should push thin archives to the cache
SERVER-38416 Upgrade static OpenSSL to 1.1.1a
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

Internals

SERVER-31755 Raise intermediate $lookup document size to 100MB, and make it configurable
SERVER-35620 downloaded file integrity: use shasum instead of python script
SERVER-38748 Background indexes created through applyOps should run on the command thread
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-39031 Make SCons default --jobs to CPU count
SERVER-39331 Remove StressTest from network_interface_asio_integration_test
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-4483 Improve caching of small updates to large values

3.6.10 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-36965 Ensure setUp writes in safe_secondary_reads_single_migration_suspend_range_deletion.js get propagated to the shard secondary
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-37511 Logical session reaper and refresh threads should set up sessions collection immediately
SERVER-37616 Implement tuneable batch size for the rangedeleter
SERVER-37902 recovering_slaveok.js should assert all writes it makes succeed
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-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-38371 Session catalog migration will skip later sessions if a different earlier session encounters new transaction

Replication

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-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
SERVER-38476 Increase timeout for clean_shutdown_oplog_state.js, again

Query

SERVER-35455 QueryPlannerAccess should hold owned pointers by unique_ptr rather than raw pointer
SERVER-37385 Change max_time_ms.js to tolerate 'Interrupted' error codes
SERVER-38070 Infinite loop in aggregation expression
SERVER-38164 $or pushdown optimization does not correctly handle $not within an $elemMatch
SERVER-38601 Add regression test for memory leak during planning

Aggregation

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-38843 Mapreduce should not create collections with duplicate IDs

JavaScript

SERVER-31508 native_sleep used by JavaScript should be interruptable
SERVER-35061 Javascript sleep should always emit an error when interrupted

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-37408 Add afterClusterTime to initial sync collection scans
SERVER-37524 In-Memory Storage Engine With Storage Watchdog Crashes The Server
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
SERVER-38434 queryableBackupMode and wiredTigerEngineConfigString flags are incompatible
SERVER-38498 decrease number of updates in rollback_wt_cache_full.js

Operations

SERVER-33469 Make syslog log lines consistent with mongod log lines
SERVER-35485 Mongo Shell does not accept compressors connection string argument
SERVER-36977 Initial mongod.log is created using umask vs mode 600

Build and Packaging

SERVER-35936 MongoDB Community Windows installer fails to install Compass
SERVER-38421 Requirement on cryptography should reflect what is in the toolchain
SERVER-38726 Add stable toolchain variables files

Tools

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

Internals

SERVER-32424 Use WiredTiger cursor caching
SERVER-34770 Retry on JavaScript execution interruptions in stepdown suites
SERVER-35768 gssapiServiceName URL parameter does not work
SERVER-36060 Make unit tests build cleanly on clang-6
SERVER-36817 replSetFreeze command run by stepdown thread may fail when server is already primary
SERVER-37120 Turn off linux-replSet-initialsync-logkeeper Build Variant for 3.4 and 3.6 branches
SERVER-37241 Add testing to verify proper expiration of sessions in the sessions collection
SERVER-37289 Use authenticated client to run the refreshLogicalSessionCacheNow command in resmoke sharded cluster fixture
SERVER-37391 plan_cache_index_create.js should wait for index build start, rather than just createIndexes command start
SERVER-37490 Increase the ConnectTimeout for powercycle
SERVER-37562 Reduce all IX locks to IS locks in SessionsCollectionRS
SERVER-37678 Update linter to enforce SSPL in header files
SERVER-37913 coll_epoch_test1.js does not wait for the config server to replicate after dropping collections.
SERVER-37916 Make legacy transport layer Sockets log hostnames in TLS version negotiations
SERVER-38055 Mongod servers started through the shell do not respect TestData.enableMajorityReadConcern
SERVER-38159 Blacklist umask nopassthrough test on mmapv1
SERVER-38178 Buffer Overflow in data_builder.h when using terminated StringDatas
SERVER-38230 Put secondary_reads_passthrough task in the right build variants
SERVER-38303 Temporarily handle ipv6 failures due to s390x machine without ipv6 enabled
SERVER-38390 Set requiresAuth to false for certain commands
SERVER-38415 checkLog.containsWithCount does not reset count before each loop of assert.soon
SERVER-38616 LDAPArrayIterator behaves incorrectly when initialized with an empty array
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-2099 Tools jstests failing on replica set shutdown
TOOLS-2155 Set version/git-commit via ldflags in Evergreen and Server Evergreen
TOOLS-2157 Update server vendoring
WT-4333 WiredTiger cursor cache doesn't handle all possible locked handle states
WT-4340 The cursor caching layer can incorrectly release too many handle locks
WT-4343 Unlock when sleeping to allow other log threads to make progress
WT-4411 Added connection statistic for current total of cached cursors
WT-4418 Don't keep key/value memory buffers allocated for cached cursors
WT-4438 Use more accurate statistics for cursor cache totals

3.6.9 Changelog

Security

SERVER-35418 Allow specifying CAs for incoming and outgoing connections separately
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-35222 Crash on the config server at expired session cleanup
SERVER-35238 Drop the collection after removing the partially written chunks for mapReduce in mongos_manual_intervention_actions.js
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-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-37631 Disable logical sessions if fCV is 3.4
SERVER-37657 Report the offending oplog entries if a batch contains non-increasing transaction numbers
SERVER-37735 [3.6] Ensure the full logical session ID is included in commands sent by the ShardingTaskExecutor

Replication

SERVER-20845 re-add replSetReconfig to auditing suite
SERVER-25175 listIndexes shouldn't include in-progress background indexes
SERVER-33383 Execution of replSetStepDown can race with unconditional stepdown via heartbeat response
SERVER-34362 ReplicaSetCoordinatorExternalStateImpl::_dropAllTempCollections() needs to log failed db.
SERVER-34868 A cursor with the "exhaust" option does not return documents inserted in the same txn
SERVER-35239 AwaitData cursor must handle getMore from client with higher lastKnownCommittedOpTime
SERVER-36503 Skip dry-run election during election handoff
SERVER-36694 Do not hand off elections when in PV0
SERVER-36746 A failed step down attempt shouldn't unconditionally reset LeaderMode to kMaster
SERVER-36978 TaskRunner must ensure Client is initialized for thread before running tasks
SERVER-37118 Coverity analysis defect 105000: Arguments in wrong order
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
SERVER-37227 Reintroduce enableMajorityReadConcern:false server parameter
SERVER-37396 make rollback_auth.js more robust

Query

SERVER-13946 Consider putting skip stages below fetch stages
SERVER-32943 Query during background index build can lead to suboptimal cached plan
SERVER-36435 Increase maxTimeMS timeout in awaitdata_getmore_cmd.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
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

Aggregation

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

JavaScript

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-34713 Progressively declining dropDatabase performance
SERVER-34866 Blacklist/unblacklist tests in secondary_reads_passthrough suite
SERVER-35657 Do not delay journal flushes when operations are waiting for oplog visibility
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-37313 FTDC collection blocked during foreground index build on secondary
SERVER-37618 Capture all the logs in lock_stats_suboperation_logs.js
SERVER-37749 replSetResizeOplog command does not validate argument

Operations

SERVER-32064 A logical session ID should be included in all command requests from the mongo shell
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

Build and Packaging

SERVER-35737 install_compass fails on MacOS
SERVER-37067 Upgrade static OpenSSL to 1.1.0i
SERVER-37651 Update license files for MongoDB Community Edition
SERVER-37754 Duplicate license headers in IDL files

Tools

SERVER-30997 mongo cli --password is masked, but not when using mongodb:// connection string
TOOLS-2102 Mongorestore does not check for errors decoding the oplog.bson file

Internals

SERVER-18985 setParameter should log at level 0
SERVER-31570 Adjust mongobridge port allocations for easier debugging
SERVER-32369 Invariant incorrectly with message stringifies its argument
SERVER-33077 checkReplicatedDataHashes should provide more information if a collection doesn't exist
SERVER-33470 Log archival message, even if successful, in hook_test_archival.py
SERVER-34248 Investigate why function_string_representation.js started failing
SERVER-34755 ignore missing collections when shutting down backup_restore.js
SERVER-34916 Blacklist core/shell_connection_strings.js from retryable_writes_jscore_stepdown_passthrough
SERVER-34986 CIDR Block That is Exempt from maxConns
SERVER-35233 Powercycle remote collection validation does not skip views
SERVER-35235 plan_cache_index_create.js should build initial index set in the foreground
SERVER-35570 Improve robustness of backup_restore.js around dropping test database
SERVER-35800 resmoke.py should retry getting a build_id and test_id from logkeeper
SERVER-35818 provide a stdx::variant
SERVER-36162 Powercycle - ensure internal crash command has been executed on the remote host
SERVER-36250 Add support for optionally logging specific negotiated TLS versions
SERVER-36301 build WT with HAVE_NO_CRC32_HARDWARE on RHEL 6.7 s390x
SERVER-36451 ContinuousStepdown with killing nodes can hang due to not being able to start the primary
SERVER-36721 list_local_sessions.js cannot run concurrently with refreshLogicalSessionCacheNow
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-36756 Log the githash of the 10gen/jstestfuzz repository when the fuzzer's self-tests fail
SERVER-36783 Run the secondary_reads_passthrough task of enterprise-rhel-62-64-bit-inmem on rhel62-large
SERVER-36842 Core dump not generated after invariant failure in powercycle hosts
SERVER-36919 Add server setParameter tlsWithholdClientCertificate (bool)
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-36987 ChunkVersion::minorVersion truncates to 16 bit
SERVER-36988 awaitdata_getmore_cmd.js times out when run concurrently with the LogicalSessionCache refresh suite
SERVER-37041 Update eval blacklists on older branches to account for differences in tests across branches
SERVER-37064 Wrap "mongod_flags" onto multiple lines for readability
SERVER-37130 Add TLS version counting to mongos
SERVER-37149 Remove deadlock in ScheduleBeforeStartupTest
SERVER-37353 Handle $slice value of LLONG_MIN gracefully
SERVER-37393 Fix destructor race in ReplicaSetMonitorManager
SERVER-37410 Add standalone passthrough suites to detect errors in LogicalSessionCache
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-37437 mongo longevity tests failing
SERVER-37467 Have collect_resource_info.py recover from transient errors.
SERVER-37477 Disable TIG daily cron for update_test_lifecycle
SERVER-37595 [3.6] Handle WT_TRY_SALVAGE error code gracefully
SERVER-37599 Log exit code of shell-spawned processes
SERVER-37701 Make SessionUpdateTracker include the uid portion of LogicalSessionId when tracking
SERVER-37816 [3.6] Add --excludeWithAnyTags=requires_wiredtiger to ephemeralForTest variants
WT-3276 Add recover=salvage to recover from a corrupted log file
WT-3735 Add a workgen workload that generates a lot of page splits
WT-3736 Add statistics to measure contention on lookaside cursor
WT-3839 Document the undefined behavior when a range truncate overlaps with inserts
WT-3856 Create a test that runs recovery to different points of time with schema operations
WT-3879 Disallow checkpoint from evicting metadata pages
WT-3894 Timestamp queue implementation and statistics improvements
WT-3917 Enhance WT_CURSOR::reserve documentation around commit visibility
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-4024 Fix a race between split and next/prev
WT-4026 Add implementation for existing file extension configuration API
WT-4048 Generalize timing_stress_for_test split functionality
WT-4067 Enhance LSM to not pin as much history in cache
WT-4090 Low priority reads
WT-4101 Don't abort the eviction server during session verify when oldest_timestamp is held back
WT-4104 Fix test/format failure during comparing data content with berkeley db
WT-4111 Improve checkpoint scrubbing algorithm
WT-4119 Avoid restarts updating / removing during a column store scan
WT-4125 Ensure that subsequent checkpoints with stable timestamp don't read too much
WT-4131 Rename lookaside to cache overflow
WT-4133 Coverity 1393445, 1393446 Dereference before null check
WT-4134 Rework assertion that we don't discard required history
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-4144 Fix rollback_to_stable with lookaside history
WT-4145 Only include the checkpoint timestamp during checkpoints
WT-4146 Coverity 1393639, unused variable
WT-4147 Log recovery should not ignore corruption outside of log records in a log file
WT-4152 Save return value for later comparison in transaction code
WT-4154 Surface the oldest read timestamp
WT-4156 Add new wiredtiger_salvage top level API
WT-4160 Restore performance when timestamps are not in use
WT-4163 Lint
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-4176 Expose a WT_SESSION.query_timestamp method
WT-4177 Backup cursor open should force a log file switch
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-4185 Don't remove all lookaside entries when reading a page
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-4211 Add automated test for long running prepared transactions
WT-4212 Update lookaside schema to handle prepared transactions
WT-4213 Rename lock statistics that have redundant or misleading text
WT-4215 Allow recovery of backup without salvage
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-4226 test/format LSM configurations can misconfigure prepare and timestamps
WT-4229 Lint
WT-4231 Fix ctags index of functions with attributes
WT-4233 Change log corruption errors to warnings and truncate log
WT-4234 Remove documentation mention of legacy tool statlog.py
WT-4235 Fix workgen tracking of table state across workloads
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-4242 New log file extension Python test failure
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

3.6.8 Changelog

Sharding

SERVER-30841 Lower the amount of metadata refresh logging
SERVER-33645 Determine if splitvector.js should be blacklisted from the retryable_writes_jscore_stepdown_suite
SERVER-34204 Tailable cursor fails on getMore against a sharded cluster
SERVER-34913 Blacklist splitvector.js from causally consistent suites
SERVER-35092 ShardServerCatalogCacheLoader should have a timeout waiting for read concern
SERVER-36332 CursorNotFound error in GetMore on a secondary with sessions
SERVER-36741 ChunkManager::getShardIdsForRange invariants when max = MaxKey
SERVER-36777 Excessive logging with sessions in fCV 3.4
SERVER-37050 wait for replication in session_collection_auto_healing

Replication

SERVER-35941 Don't maintain full stable optime candidate list on secondaries in PV0
SERVER-36128 ReplicationCoordinatorImpl::fillIsMasterForReplSet should return isMaster:false while in shutdown
SERVER-36664 Use awaitReplication in read_committed_with_catalog_changes.js instead of getLastError
SERVER-37010 Prevent unexpected elections in initial_sync4.js and initial_sync_rename_collection*.js

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

Aggregation

SERVER-35084 change_stream_enforce_max_time_ms_on_mongos.js expects getMore to schedule follow-up getMores

Storage

SERVER-34384 Passthrough test for secondary reads during oplog application
SERVER-37002 dropping a collection with long index names via rename fails under MMAPv1

Operations

SERVER-36479 Log redaction does not show planSummary when slow queries are logged

Build and Packaging

SERVER-36884 Update curator version on stable branches

Internals

SERVER-32920 Avoid overriding read preference for the config server in passthrough tests.
SERVER-34120 scoped connection not being returned to the pool
SERVER-34144 Powercycle output improvements
SERVER-34465 Add a testing parameter to choose a permanent sync source
SERVER-34614 parallelTester should use a different connection for each new test
SERVER-34923 Replace PeriodicRunnerASIO
SERVER-35100 Do not log a Python stack trace when a hook dynamic test fails
SERVER-35123 The periodic_runner_impl starts jobs immediately, unittests should reflect that
SERVER-36001 Add requires_document_locking tag to noPassthrough/indexbg2.js
SERVER-36149 Fix privileges on setFCV virtual namespace
SERVER-36725 periodic_runner_impl_test should manually call tearDown
SERVER-36743 Stop mongod before log ingestion in startup_logging.js
SERVER-36947 Enable test commands for perf micro benchmarks
SERVER-36980 Remove old aggregation fuzzer from evergreen
WT-4218 Change eviction to evict prepared updates.

3.6.7 Changelog

Security

SERVER-33857 Missing log redaction due to confusion with Command::redactForLogging()
SERVER-35032 Non-SSL connections to requireSSL instances get non-informative log message in 3.6.4

Sharding

SERVER-27725 Use batch insert when migrating chunks
SERVER-32056 Increase maxExpireTime in tests to account for rounding
SERVER-33237 Optimize the Range Deleter speed
SERVER-33697 Provide sanity check on number of cached sessions
SERVER-34843 Mongod can return operationTime greater than $clusterTime
SERVER-34897 Introduce parameter to control whether MongoS should automatically retry failed find commands
SERVER-35377 Operations on new clients get latest in-memory clusterTime as operationTime
SERVER-35658 session migration is too sensitive to replica set primary elections
SERVER-36041 Increase the size of changelog and actionlog
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
SERVER-36248 Do not reject sessions in fCV 3.4
SERVER-36463 Bypass validation of a dummy signatures for isMaster on the unauthenticated connections

Replication

SERVER-28389 Pass CallbackCanceled error down to scatter-gather runner algorithm to process
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-34414 Creating a role with buildsIndexes:false node hits an fassert
SERVER-34895 Stable timestamp can be set to timestamp not in oplog
SERVER-34941 Stuck with cache full during recovery oplog application
SERVER-34942 Stuck with cache full during oplog replay in initial sync
SERVER-35058 Don't only rely on heartbeat to signal secondary positions in stepdown command
SERVER-35113 Stable timestamp does not advance if lastApplied does not move forward, but all committed timestamp does, on single node RS
SERVER-35200 Speed up failure detection in the OplogFetcher during steady state replication
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-35623 Send a replSetStepUp command to an eligible candidate on stepdown
SERVER-35624 Enable election handoff by default and update affected tests
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-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-36083 Add allowMajorityReadConcern:false evergreen variant
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.

Query

SERVER-33245 mr.cpp can throw in an ON_BLOCK_EXIT handler when there's already an active exception
SERVER-36239 MatchExpression parser query rule

Aggregation

SERVER-35961 Remove uninitialized count variable in MapReduce command
SERVER-35967 $sample with explain(true) hangs
SERVER-36070 Aggregation with $out results in error when Auditing is enabled

JavaScript

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

Storage

SERVER-33191 Cache-full hangs on 3.6
SERVER-34129 Don't hold database or collection locks during oplog truncation

Operations

SERVER-34160 Mongo client run buffered command when terminated.
SERVER-35180 Safeguard from setting operation session info values while in a direct client
SERVER-35795 3.4 secondaries crashing after some time with 3.6 primary
SERVER-36010 Change log messages for Windows stacktraces to use error() or severe() rather than log()

Build and Packaging

SERVER-35978 Fix lint on 3.6
SERVER-36039 Support LibreSSL 2.7 on FreeBSD

Tools

TOOLS-2075 mongoreplay always replays to secondary

Internals

SERVER-26150 auth_utils.js authutils.assertAuthenticate should handle hangups better
SERVER-32302 for-each loop over BSONObj is slower than explicit BSONObjIterator in MatchExpressionParser code
SERVER-32371 features2.js should exclude clusterTime metadata
SERVER-32639 Arbiters in standalone replica sets can't sign or validate clusterTime with auth on once fCV checks are removed
SERVER-32792 Blacklist tests that assert on ismaster field of isMaster response in retryable_writes_jscore_stepdown_passthrough
SERVER-33695 Include the loop name in the before and after recovery files in powertest.py
SERVER-33841 Add hooks for the mutational fuzzer
SERVER-34258 Error from mount_drives.sh on Windows
SERVER-34558 Add SSL_version to client metadata logging
SERVER-34793 Add call to BF suggestion server on failed task completion
SERVER-35110 Log locations in set_feature_compatibility_version.js where fatal assertions/other errors are expected
SERVER-35383 Increase electionTimeoutMillis for the ContinuousStepdown hook used in stepdown suites
SERVER-35472 resmoke.py shouldn't fall back to stderr when logkeeper is unavailable
SERVER-35668 Avoid moving concurrency tests to small instances on arm64
SERVER-35724 Remote EC2 hosts which are not accessible via ssh should fail with system error
SERVER-35858 Error in call BF Suggestion service
SERVER-35861 Remove call to dashboard_gen.py in perf.yml
SERVER-35946 Powercycle kill_mongod function should ensure the service is not in a running state
SERVER-35993 read_concern_uninitiated_set restarts nodes so must not allow ephemeral storage
SERVER-36223 Add hook for the fuzzer to not send lsid in the preamble on v3.6
SERVER-36274 Re-enable --ycsb-throughput-analysis in sys-perf
SERVER-36448 Disable election handoff in suites that use the ContinuousStepdown hook
SERVER-36462 Add atlas user to runtime_secret.yml
TOOLS-1991 Build tools with Go 1.10.1
WT-4143 Use WiredTiger.turtle.set if it exists but WiredTiger.turtle does not

3.6.6 Changelog

Security

SERVER-34822 RoleGraph update should ignore index creation on non-role collections
SERVER-35322 external_auth tests should use unique kerberos credentials cache per test

Sharding

SERVER-25746 Store advisoryHostFQDNs data in config.mongos collections
SERVER-33081 Reset KeysCollectionManager during rollback properly
SERVER-33327 Session::onMigrateCompletedOnPrimary should not update the lastWriteDate field
SERVER-33538 mapReduce "replace" on a sharded output collection can lead to UUIDCatalog inconsistencies
SERVER-33639 Concurrent writes against non-existent database can fail due to distlock acquisition timeout at createDatabase time
SERVER-34363 addShard shard registry reload can cause mongos to terminate
SERVER-34773 The TransactionReaper handler classes are not exception-safe
SERVER-34833 Deadlock between the logical sessions' transaction reaper and MMAP V1 durability thread
SERVER-34857 sharding_legacy_api_test is flaky due to reliance on the system clock
SERVER-35006 Do not reset KeysCollectionManager
SERVER-35345 Test that restarted mongoses are able to connect after fCV update
SERVER-35609 Create initial chunk on primaryShard if only writing one chunk
SERVER-35653 Revert initial chunk creation optimization
SERVER-35745 _getNextSessionMods doesn't include oplogReplay flag to query new oplog created during migration

Replication

SERVER-5461 Add syncSourceHost field to replSetGetStatus output
SERVER-29844 If node has a higher priority than the primary and is the most up to date, schedule the takeover that will execute faster.
SERVER-31995 Logged initial sync statistics may exceed 16mb causing fassert
SERVER-32382 Rollback can time out if oplog entries are large
SERVER-32687 Ignore collection-not-found when fetching missing documents in sync_tail.cpp during initialSync
SERVER-32935 improve exception handling in SyncTail::oplogApplication()
SERVER-33638 CheckReplDBHash should ignore mapreduce incremental collections
SERVER-33812 First initial sync oplog read batch fetched may be empty; do not treat as an error.
SERVER-34102 Under PV1, ReplicationCoordinatorImpl::_handleTimePassing for a single node RS should start an election instead of auto-winning.
SERVER-34110 Ignore NamespaceNotFound errors when refetching documents during rollback
SERVER-34249 Oplog query on uninitiated replica set node can cause seg fault
SERVER-34549 Tests refer to ReplSetTest.kDefaultTimeoutMS, which is undefined
SERVER-34661 Return early when the vote request response has an error
SERVER-34682 Old primary should vote yes and store the last vote after stepdown on learning of a higher term
SERVER-34758 replSetGetStatus can deadlock with initialSyncer
SERVER-34900 initial sync uses different batch limits from steady state replication
SERVER-35087 "./jstests/replsets/read_concern_uninitated_set.js" and test should be disabled in evergreen for storage engines - ephemeralForTest & mmapv1.
SERVER-35124 Stepdown suites with MMAP V1 often fail due to flushing mmaps taking long time
SERVER-35249 Invariant that we apply to top of oplog on 3.6 replication recovery
SERVER-35256 Do not treat it as an error if the first batch returned by an oplog query comes back empty in master-slave
SERVER-35340 Reduce number of iterations in update_and_bulk_insert.js FSM workload
SERVER-35405 Change default setting for replBatchLimitOperations

Query

SERVER-33959 CursorManager attempts to dispose of aggregation cursors while holding partitioned lock, which leads to deadlock
SERVER-34933 pcre verb support
SERVER-35693 Parsing of $in takes quadratic time due to O(n^2) boost::flat_set constructor

Aggregation

SERVER-34040 Disallow change stream on "internal" databases and system collections
SERVER-35750 [3.6 only] Fix assert in change_stream_collation.js to be assert.soon()

JavaScript

SERVER-34515 Invariant failure _scope->exec( "$arr = [];", "group clean up", false, true, false , 2 * 1000)

Storage

SERVER-31679 Increase in disk i/o for writes to replica set
SERVER-33078 convertToCapped size is not checked for float -> long long overflow
SERVER-34630 Change WiredTiger compatibility version setting in 3.6 release
SERVER-34829 Drop pending reaper must not delete the _dropPendingNamespaces entry until after the drop occurs
SERVER-34863 Disable LSM testing on 3.2, 3.4 and 3.6 branches
SERVER-35859 Disable rocksdb buildvariant

WiredTiger

SERVER-33706 Remove warning message about Windows FS cache configuration

Operations

SERVER-27230 Poor compression of diagnostic data when replica set is unhealthy
SERVER-28830 cursorHandleFromId should verify that its not being called on a closed connection
SERVER-32065 Add support for retryWrites option in mongo shell connection string format
SERVER-33080 blacklist getLog2.js from the parallel suite
SERVER-33546 Add numeric syncing field to replSetGetStatus members array
SERVER-34141 Inconsistent appName in Shard
SERVER-34159 Fix migration_destination_manager logging
SERVER-35444 Heap stacks should not be included in serverStatus with heapprofilingenabled

Build and Packaging

SERVER-32999 Platform Support: remove Debian 7
SERVER-33395 PPC64 little endian altivec optimizations are broken on newer gcc
SERVER-34451 MongoDB installation on Windows error: setup wizard ended prematurely
SERVER-35210 curator release versions should be populated from the project expansions

Tools

TOOLS-2058 mongoreplay does not show OP_MSG commands
TOOLS-2062 Support zlib compression in mongoreplay

Internals

SERVER-26884 Support archiving data files in Evergreen on test failure
SERVER-29359 Enable SO_KEEPALIVE on egress server connections
SERVER-31013 Make serverExitCodeMap useful to detect if server crashed on startup before connection established
SERVER-31400 Record Linux netstat metrics in ftdc
SERVER-31562 dump replica set oplogs at the end of every failed test
SERVER-31830 Log values in invariant statements
SERVER-32602 Multiversion tests are not running enterprise MongoDB on enterprise build variants
SERVER-32688 FSM replication suites should give secondaries zero votes
SERVER-32715 Add "Connection refused" to the list of _SSH_CONNECTION_ERRORS in remote_operations.py
SERVER-32762 Module to upload files to S3
SERVER-32763 Create archive.json and associate to task in evergreen.yml
SERVER-32852 Capture FTDC data on failures of the concurrency suite
SERVER-33009 AWS credential profiles in evergreen.yml
SERVER-33144 Support archiving data files in Evergreen on test failure - Windows
SERVER-33193 Enable test failure archive for specific tasks and hooks
SERVER-33346 Pin a specific version of boto3 for use in etc/evergreen.yml scripts
SERVER-33420 Add detection metafunctions to StatusWith
SERVER-33512 Add PeriodicKillSecondaries hook to archive list
SERVER-33553 OP_KILL_CURSORS fails on mongos: Unable to check out cursor for killCursor
SERVER-33813 launch_evergreen_ec2_instance.sh should immediately fail if the call to aws_ec2.py is unsuccessful
SERVER-33817 Powercycle test using kill mongod
SERVER-33995 mongod crashes with nmap script
SERVER-34075 powercycle_replication* must run replication recovery to observe canary documents
SERVER-34345 Make it easier to provide validation rules for server parameters
SERVER-34371 Stop ignoring errors when the test fixture fails to delete data files
SERVER-34374 resmoke.py uses bytestrings for representing pathnames, leading to silently failing to clear the dbpath on Windows
SERVER-34380 system_perf.yml: Remove the compile_proxy task
SERVER-34481 Improve resiliency of awaitdata_getmore_cmd.js
SERVER-34540 Remove sleeptest from dbtests
SERVER-34563 Connect via SRV record fails if the returned record resides in subdomain
SERVER-34735 Extract structured names from X.509 certificates
SERVER-34810 Session cache refresh can erroneously kill cursors that are still in use
SERVER-34851 Disallow index selection for identical min & max values on find
SERVER-34865 Test archival fails when temporary files are removed
SERVER-34888 Track status of SSLPeerInfo
SERVER-34936 Reduce batchtime for rocksdb buildvariant
SERVER-34950 Use new sys-perf baseline 3.4.14-Baseline
SERVER-34956 big_object1.js is not resilient to unexpected stepdowns
SERVER-34996 Save console_output & console_screenshot from aws_ec2.py as artifacts in evergreen.yml
SERVER-35051 Resmoke should stop the balancer before shutting down sharded clusters
SERVER-35055 KeyedExecutor
SERVER-35071 Split MMAPv1 tasks into separate variants in sys-perf
SERVER-35101 Handle differently a badly formed bindIp argument
SERVER-35108 Enable signal processing in system_perf.yml
SERVER-35155 Fix jstests/ssl/x509_invalid.js using explicit X509 client names
SERVER-35188 Typo in ServiceLiason* types
SERVER-35190 resmoke.py runs lists of tests in alphabetical order by default
SERVER-35207 Don't use json.get_history in system_perf.yml
SERVER-35227 Delete embedded from the 3.6 branch
SERVER-35229 Improve logging in apply_batch_only_goes_forward.js
SERVER-35231 Invalid decimal continuation can trigger a dassert when decoding a KeyString
SERVER-35232 Backport futures to 3.6
SERVER-35348 Add silent option in the update_test_lifecycle task
SERVER-35506 The Powercycle wait_for_mongod_shutdown function should ensure the mongod process is no longer running
SERVER-35588 powertest.py should call replSetReconfigure command only after successful replSetGetConfig
SERVER-35610 Refine LDAP options parsing
SERVER-35706 Fix race in ctor for LogicalSessionCacheImpl
SERVER-35834 Fix compile errors in dns_name_test on Microsoft compilers
SERVER-35917 Blacklists tests which use resumeAfter from the sharded collections change streams passthrough
WT-3698 Threads doing eviction can stall indefinitely when timestamps fail to advance
WT-3892 Add timing_stress_for_test option for lookaside cleanup
WT-3914 Add general documentation for prepared transactions
WT-3937 Tune lookaside sweep to react to workload
WT-4000 Avoid getting two snapshots when setting a read_timestamp
WT-4004 test/format snapshot-isolation search mismatch failure
WT-4016 Measure and improve lookaside performance with stable_timestamp set
WT-4023 Add messages to a few places that return errors
WT-4029 Bump the log file version
WT-4033 Add ability to alter tables without taking exclusive access
WT-4039 Move row-store missing-value support into the cell unpack code.
WT-4044 Add an internal API to return if a generation is active
WT-4049 Performance drop in long tests
WT-4051 format configures too-small LSM caches.
WT-4052 Free transaction resources on session reset
WT-4055 format transaction prepare and logging configuration is incorrect
WT-4056 New API to configure a minimum compatibility version on open
WT-4057 round_to_oldest should establish txn snapshot after establishing rounded read timestamp
WT-4058 Make slot switch quicker when io is slow
WT-4059 Start lookaside sweep at full records
WT-4060 Clean up __wt_getenv() error handling.
WT-4061 Don't rollback during recovery due to cache pressure
WT-4063 Update docs to make clear when log archiving is disabled.
WT-4064 Relax checking of lookaside entry count
WT-4069 Commit of a truncate can leave a page permanently locked
WT-4070 WiredTiger recovery can checkpoint data referencing pieces of a transaction
WT-4071 Run unit tests with timestamps disabled
WT-4074 Lint fix: don't use error labels that do nothing other than return
WT-4075 Allow timestamp_transaction after prepare
WT-4076 test/format failure with cache stuck full of internal pages
WT-4077 Transactional test on zSeries contains wrong LSN in checkpoint
WT-4078 Splits can leak a page lock if memory allocation fails.
WT-4079 confirm WiredTiger builds under gcc8
WT-4080 gcc8 -Wparentheses complains about WiredTiger's __F() macro.
WT-4081 Improve errors and documentation for syscall.py
WT-4086 Verify log file versions before opening logging subsystem
WT-4087 Store current compatibility within WiredTiger
WT-4091 Make timing_stress_test options for page split race conditions work.
WT-4093 Temporarily disable test/format LSM and timestamp testing
WT-4094 Understand variable throughput when running YCSB 50/50 workload
WT-4098 Add new compatibility_max configuration option
WT-4105 Optimize cache usage for update workload with history pinned
WT-4110 test_timestamp_abort failed with missing records
WT-4115 Valgrind error in est_wt4105_large_doc_small_upd
WT-4116 Coverity #1393311 Copy-paste error
WT-4117 Expose WiredTiger crc32c function
WT-4120 Enhance test/format to dump the cache when timing out
WT-4122 Ensure compatibility downgrade cleans up old log files
WT-4127 Add common prefix for compatibility version errors
WT-4128 Skip checkpoints while stable timestamp doesn't change

3.6.5 Changelog

Security

SERVER-34418 Disable GCM encryption with ESE on OS X with OpenSSL
SERVER-34477 Coverity analysis defect 103475: Invalid iterator comparison

Sharding

SERVER-32681 exact_shard_key_target.js moveChunk should wait for delete
SERVER-33585 Do not return $clusterTime when no keys are available
SERVER-33714 Downgrading fCV from 3.6 to 3.4 leaves an admin.system.keys collection on shards that on upgrade is orphaned and renamed without a UUID
SERVER-33766 Secondary may not invalidate in-memory routing table cache after primary refresh
SERVER-34098 Move chunk_manager_refresh_bm from unit test to perf microbenchmark
SERVER-34347 Batch write with ranged query predicate mixed with single target triggers invariant on mongos
SERVER-34508 Prevent race condition in Migration Destination Manager from swallowing an exception
SERVER-34571 Invariant fails in destructor of MigrationChunkClonerSourceLegacy on shutdown
SERVER-34586 Possible double mutex acquisition in ShardServerCatalogCacheLoader
SERVER-34644 Disable DollarPrefixedFieldName checks for moveChunk/mergeChunks
SERVER-34683 Downgrade replicaset from 3.6.4 to 3.4.14 fails due to the presence of config.system.sessions
SERVER-34746 Segmentation fault when shard is started with --shardsvr before being added to a shard

Replication

SERVER-29966 Add invariant that lastOpApplied doesn't change during secondary batch application
SERVER-30642 Raise election timeouts as a way to provide more stable replica set test topologies
SERVER-32647 Retry connecting to replica set when given a seed node in Jepsen tests
SERVER-33026 SyncSourceFeedback request doesn't have a timeout
SERVER-33287 Create passthrough that kills the primary node
SERVER-33475 Retried writes doesn't properly wait for writeConcern
SERVER-33879 config.transactions is not updated during startup replication recovery
SERVER-33956 A sequence of rename and create collections that do not arrive at the correct end state

Query

SERVER-33154 {"query" => "foo"} is upconverted incorrectly
SERVER-34389 Modify change_stream_collation test to avoid failure
SERVER-34714 An $or query with children which are all trivially false incorrectly optimizes
SERVER-34725 Group and count plan stages do not set the WorkingSetID output on PlanStage::DEAD state
SERVER-34767 Randomized KeyString decode test can hit dassert in Decimal

Write Operations

SERVER-27534 All writing operations must fail if the term changes

Aggregation

SERVER-34399 $changeStream with invalid resume token crashes the server

Storage

SERVER-32989 repairDatabase can race with dropDatabase.
SERVER-33743 Use all_committed to set lastApplied on primary nodes
SERVER-34091 Oplog visibility rules can cause cappedTruncateAfter to erroneously skip record deletion in WiredTiger
SERVER-34423 collMod interruption may cause invariant failure
SERVER-34656 Add secondary reads sys-perf test to system_perf.yml

WiredTiger

SERVER-20056 Log a startup warning if wiredTigerCacheSizeGB is > 80% of RAM

Operations

SERVER-32876 Don't stall ftdc due to WT cache full
SERVER-34665 The mongo shell should retry writes on a WriteConcernFailure error response from the server

Build and Packaging

SERVER-29463 Platform Support: add Debian 9 "Stretch"
SERVER-44392 Platform Support: remove Ubuntu 16.04 "Xenial" on s390x architecture
SERVER-32785 Integrate Google Benchmark into SCons
SERVER-34149 Upgrade zlib to latest
SERVER-34250 Update Tools builders in Evergreen to match upstream
SERVER-34461 Source OpenSSL source tarball from boxes.10gen.com

Tools

TOOLS-1765 mongoreplay crashes with out of memory recording from 8GB pcap file
TOOLS-1776 mongoreplay hangs on open connection when finishing playback
TOOLS-1780 Build tools with Go 1.8.x
TOOLS-1948 Use Go-native TLS dialer on platforms with openssl 0.9.x
TOOLS-1968 Backport - Need to update spacemonkeygo/openssl fork to support newer OpenSSL libraries
TOOLS-1999 Use of --uri overrides use of --ssl
TOOLS-2005 --quiet flag not honored on mongofiles

Internals

SERVER-25640 Have ReplSetTest run checkDBHashes() in stopSet()
SERVER-29301 Upgrade MozJS to ESR 45.9.0
SERVER-33199 Add Resmoke Benchmark suite
SERVER-33200 Write a new test runner for Benchmark
SERVER-33201 Add Benchmark resmoke testcase
SERVER-33202 Add hook to enable resmoke.py to generate perf.json
SERVER-33203 Write benchmark canary tests
SERVER-33204 Modify Evergreen.yml to support Benchmark
SERVER-33329 Server and Shell do not emit TLS "protocol_version" alert messages
SERVER-33398 Add the new finer grained sys-perf tasks
SERVER-33438 burn_in_tests.py fails if there are new or modified files and build/benchmarks.txt doesn't exist
SERVER-33491 Fix benchmark.h compile with -fdirectives-only
SERVER-33497 Remove the --options option to resmoke.py
SERVER-33560 Remove deprecated Fixture function declarations from Google Benchmark
SERVER-33636 wrap transaction_reaper.js writes in an assert.writeOK
SERVER-33643 Add convenience function to get num cpu cores in benchmarks
SERVER-33734 Improve jsTestLog filterability
SERVER-33746 Pipe in additional Evergreen options to resmoke.py
SERVER-33805 Change Jepsen tasks running in Evergreen to use mongobridge
SERVER-33938 Increase replication timeout in CheckReplDBHash hook
SERVER-34210 Fix display of benchmarks with multiple arguments
SERVER-34218 FieldRef::parse does not completely initialize the FieldRef
SERVER-34237 Expose means for shell to disable TLS 1.0
SERVER-34390 Make OS X binaries speak TLS 1.2
SERVER-34412 powercycle* tasks set timeout_secs in wrong location of task definition
SERVER-34444 Reestablish a new connection to LocalToRemoteOperations after crash in powercycle.py
SERVER-34476 Fix OpenSSL linking on FreeBSD
SERVER-34582 AsyncRequestsSender can block network threads during construction
SERVER-34605 Change Jepsen tasks to run on the ubuntu1604-build distro in Evergreen
SERVER-34651 Performance regression on secondary application with retryable batched writes
SERVER-34657 Add secondary reads YCSB test to system_perf.yml
SERVER-34667 data_consistency_checks.js incorrectly assumes that the config.mongos collection always exists
SERVER-34742 Stop running ssl_cert_password.js on OS X
SERVER-34823 Thread name and connection number are not synchronized in TransportLayerLegacy
SERVER-34827 retryable writes not in sys-perf-3.6 project
SERVER-34834 Wait for replication of fCV document before downgrading binaries in clear_and_reinstate_keys_rs.js
SERVER-34929 Fix malformed preprocessor macro check
TOOLS-1941 Tools qa-tests often timeout, particularly on server latests
TOOLS-1978 tools fail eslint testing
TOOLS-2003 Drop SUSE11 from Evergreen builds
WT-3851 Optimize wt_compare* routines with NEON instructions for ARM platform
WT-3886 Identify statistics relevant for prepared transactions
WT-3910 libwiredtiger-3.0.1.dylib loading failure on OS X
WT-3959 Recovery timestamp set on restart scenarios need addressing
WT-3998 Fix a bug where stable timestamp was ignored on shutdown
WT-4006 Add support for stress timing configurations to test/format
WT-4009 Create fast path for cursor caching with "overwrite=false"
WT-4012 Fix lookaside entry counters
WT-4014 If eviction walk is interrupted, clean up the queue.
WT-4015 Enhance schema06 unit test to test drops
WT-4017 When evicting during a checkpoint, avoid splits
WT-4019 Change test/format to test transaction prepare less often
WT-4027 Yield cursor operations between restarted search/traverse
WT-4028 Don't check for a modified page without holding the ref locked
WT-4031 on-page zero-length row-store values can be discarded from checkpoints
WT-4032 parent pages can be evicted while being split.
WT-4034 Re-entering eviction can result in checkpoint corruption
WT-4035 Truncate information discarded while active
WT-4036 Fix Coverity false positive: out-of-bounds access.
WT-4037 WT_REF structures freed while still in use
WT-4042 Access data handles safely during cursor reopen
WT-4045 Don't retry fsync calls after EIO failure

3.6.4 Changelog

Sharding

SERVER-16802 Order of balancer chunk moves depends on order of config.collections
SERVER-28670 Add sharding metadata refresh metrics section to serverStatus
SERVER-28981 Sharding balancer prefers shards in a specific order when moving chunks
SERVER-29807 RangeDeleter should log when its about to wait for majority replication
SERVER-32210 Stepping down recipient shard's primary while migrating session information can fassert
SERVER-32604 prevent adding a binary last-stable shard if the cluster is upgrading or downgrading
SERVER-32885 Overlap chunk clone application on the donor with fetching documents from the recipient
SERVER-32886 Unnecessary sleeps during chunk migration
SERVER-33189 Unblacklist sharding tests marked as requiring already released last-stable versions
SERVER-33763 3.6 drivers fail to communicate with 3.6 sharded clusters running at fCV 3.4
SERVER-33869 make $changeStream on shards check shardVersion
SERVER-33971 Nodes in MongoDB sharded cluster crashes with Invariant failure oplogEntry.getWallClockTime()

Replication

SERVER-29946 Increase heartbeat rate when a secondary has no sync source
SERVER-30283 PingStats::hit() should not set _numFailuresSinceLastStart to integer max
SERVER-31399 repl.apply.batches.totalMillis does not record the time spent applying batches
SERVER-31666 catchup_takeover_one_high_priority should use initiateWithAnyNodeAsPrimary
SERVER-31669 Increase the election timeout in case 3 of catchup.js
SERVER-32776 Refresh rollback ID cache on increment
SERVER-33448 Relax time diff requirements in apply_batches_totalMillis.js
SERVER-33618 Initial sync should consider applyOps a CrudOpType

Query

SERVER-31293 Don't consider readPreference "primary" as equivalent to 'slaveOk' in OP_QUERY find path
SERVER-33302 Missing log redaction for a few failure paths
SERVER-33542 Using maxTime() on MongoDB 3.4 and 3.6 does not yield the same error code

Storage

SERVER-32058 Abort of catalog meta-data updates may lead to cache inconsistency
SERVER-32453 WTKVEngine::getAllIdents mishandles cursor->next return code.
SERVER-32574 Repairing the local database can cause the WT oplog manager thread to permanently exit.
SERVER-32641 Some artificial find may crash debug builds of the server
SERVER-32831 Blacklist change_stream_chunk_migration.js and close_cursor_on_chunk_migration_to_new_shards.js for LSM buildvariant
SERVER-33086 renameCollection target should never have identical UUID with a different database
SERVER-33087 Fix the use of dropTarget in renameCollection
SERVER-33122 add option to disable cursor caching to speed up dropDatabase and collection drop
SERVER-33233 Don't stall ftdc due to running out of tickets
SERVER-33854 Fix applyOps field handling
SERVER-34024 Disable WiredTiger cursor cache by default.

Operations

SERVER-12644 Move note about noprealloc hurting performance to startup warnings
SERVER-30114 Monitor cumulative time spent in tcmalloc spin lock
SERVER-30567 Break out serviceExecutorTaskStats by task type
SERVER-32498 "desc" field in currentOp output no longer contains the thread name used in log messages
SERVER-33227 Using the method connect in a script will as a side effect update global db.

Build and Packaging

SERVER-31535 Platform Support: remove Ubuntu 12.04 builds
SERVER-32923 Platform Support: remove SLES11 builds
SERVER-33406 Reduce concurrency for s390x compile and compile_all builds to avoid OOM failures
SERVER-33779 Remove tvOS and iOS variants from the v3.6 branch
SERVER-33936 3.6 nightly builds not available for download

Internals

SERVER-30609 Investigate need for markThreadIdle with adaptive service executor
SERVER-30979 Run the fuzzer with CSRS primary stepdowns
SERVER-31181 ServiceExecutorAdaptive maxLatencyMicros should be greater than the minimum timer resolution of the OS
SERVER-31198 Run the concurrency suite with shard stepdowns
SERVER-31266 Treat queued task reporting for adaptive service executor consistently
SERVER-31452 Run fuzzer with shard stepdowns
SERVER-31556 Fix ContinuousStepdown logger
SERVER-31917 RollbackTest fixture should add more log messages describing the actions it is taking
SERVER-31999 Race condition in awaitdata_getmore_cmd.js
SERVER-32034 Replica Set primary becomes unresponsive with adaptive Service Executor
SERVER-32063 mongos responds with "Unauthorized: there are no users authenticated" to an isMaster request using an lsid
SERVER-32126 validate() should do basic sanity checks for UUIDs
SERVER-32241 applyOps reports success even when a nested applyOps fails.
SERVER-32445 config.transactions table can get out of sync when the TransactionReaper remove entries
SERVER-32474 resmoke.py logging output from data consistency hooks twice to logkeeper
SERVER-32477 ASIOSession fails to gracefully teardown sockets
SERVER-32528 Use fixed version of curator for remote EC2 instances in evergreen.yml
SERVER-32583 Sys-perf update bootstrap variables to use proper ConfigDict Names
SERVER-32600 setup_multiversion_mongodb.py may download non-x86_64 binaries on x86_64 platforms
SERVER-32798 Add duroff variant for MMAPv1
SERVER-33129 getMinimumTimerResolution() returns maximum resolution on Windows
SERVER-33150 Race between creating a system.profile collection and assigning UUIDs to non-replicated collections on clean startup
SERVER-33224 Use windows-64-vs2015-small distros for powercycle tasks
SERVER-33346 Pin a specific version of boto3 for use in etc/evergreen.yml scripts
SERVER-33424 Change update_test_lifecycle.py script to use OAuth when authenticating to JIRA
SERVER-33437 Decorable::declareDecorationWithOwner passes wrong owner pointer to its decorations
SERVER-33467 Do not free memory returned by ldap_get_option(LDAP_OPT_ERROR_STRING) on Windows
SERVER-33483 HTTP detection no longer working
SERVER-33484 Code coverage can't distinguish between files with identical names
SERVER-33502 Blacklist or rewrite jsCore tests that use the getLastError command from the parallel suite
SERVER-33520 Enable background refreshing of the logical session cache during the fuzzer test suites
SERVER-33569 The check for logical session existence must not allow partial results
SERVER-33572 Provide a bounded, interruptible, thread safe, producer consumer queue
SERVER-33619 Assign address_type for any EC2 instance in powertest.py
SERVER-33623 Enable multiversion for aggregate_fuzzer
SERVER-33640 Blacklist find_and_modify_concurrent_update.js from causal consistency passthrough
SERVER-33670 Build mongo binaries with -ssl compile flag in system_perf.yml
SERVER-33682 Python virtualenv not setup in "Gather remote mongo coredumps" post phase in evergreen.yml
SERVER-33691 Remote EC2 instances should have a log disk
SERVER-33692 Only backup data files from failed Powercycle tests
SERVER-33696 Set timeout_secs for powercycle* task to restrict the duration of a single powercycle loop
SERVER-33751 Auth when connecting to an existing cluster in ReplSetTest
SERVER-33778 Remove change_stream_remove_shard.js
SERVER-33843 PeriodicKillSecondaries hook can run validate while a secondary is still applying operations
SERVER-33848 Update compile flags for sys-perf and performance projects
SERVER-33935 utils_auth.js should support connecting to clusters running with SSL
SERVER-33970 New baselines for mongo-perf
SERVER-34062 powertest.py attempts to access an attribute named address_type rather than its value
SERVER-34140 remove multiple distro specification for single tasks in evergreen configs
SERVER-34178 Address lingering issues around TestData.excludedDBsFromDBHash
SERVER-34213 testshard1.js should use _ids of [0, nItems -1] instead of [1, nItems]
SERVER-34318 Set timeout for canary insert to 1 hour in powertest.py
SERVER-34352 Run dbhash check before collection validation in jstestfuzz_sharded_continuous_stepdown.yml
SERVER-34361 blacklist migration_critical_section_concurrency.js in v3.6 last stable
WT-1228 Improve performance of WT_SESSION::open_cursor
WT-3724 Log an error if flushing with F_FULLSYNC fails
WT-3805 Avoid reading lookaside pages in truncate fast path
WT-3815 Cursor caching: measure and tune performance
WT-3829 WiredTiger metadata can be logically inconsistent.
WT-3848 Enhance new prepare transaction API to enforce post conditions
WT-3849 Add timestamp validation to WT_SESSION::prepare_transaction
WT-3850 Implement WT_SESSSION::prepare_transaction
WT-3867 Bi-weekly WT codebase lint
WT-3868 Bi-weekly WT codebase lint
WT-3869 Bi-weekly WT codebase lint
WT-3870 Bi-weekly WT codebase lint
WT-3901 Corruption of operation tracking log files
WT-3904 Reconsider error path in log server thread
WT-3905 Save the timestamp used for a checkpoint
WT-3906 Respect stable_timestamp in WT_CONNECTION::close
WT-3911 Ignore lookaside data on shutdown
WT-3912 fast-delete pages should re-instantiate the delete transaction's timestamp.
WT-3913 Enhance cursor operations to account for prepare state
WT-3922 Allow truncate operations to be prepared
WT-3923 __wt_txn_context_prepare_check() requires API initialization
WT-3925 Fix test format operation selection code
WT-3926 Allow read_timestamp to be set after begin_transaction
WT-3927 Disable truncate testing with LSM
WT-3930 Set the recovery timestamp even if recovery doesn't run
WT-3931 cursor.prev split race
WT-3932 WiredTiger memory allocation failure in js_test
WT-3933 test/format failure illegal WT_REF.state rolling back deleted page
WT-3934 LSM chunk checkpoints can race with system checkpoints
WT-3935 Enable cursor caching by default in WiredTiger.
WT-3936 Add multi-threaded tests for prepare_transaction()
WT-3938 Reduce memory usage with many tables and sessions
WT-3939 test_txn14.test_txn14.test_log_flush timeout
WT-3940 s_export issue detected during WiredTiger release execution
WT-3942 Update test_compact02 to handle being halted by eviction pressure.
WT-3945 Support libwiredtiger.so checking in s_export
WT-3946 Truncate segfault with a NULL start cursor
WT-3947 Allow wiredtiger_open configuration to disable cursor caching
WT-3948 Data handle loop may terminate without applying operations
WT-3949 Buffer overflow in WT_CURSOR::modify for string values
WT-3950 Add some rollback_to_stable statistics
WT-3952 page-delete update list traversed after it has been discarded.
WT-3953 test/format can attempt to set an illegal prepare timestamp
WT-3954 test/format: prepared operations evicted before commit
WT-3958 Add query API to get most recent checkpoint's stable timestamp
WT-3961 The all_committed timestamp should be less than any in-flight transaction
WT-3964 Stop wrapping schema operations in a transaction
WT-3967 Fix long test for cursor cache sweep
WT-3969 enhance format tester to account for prepare state
WT-3971 Make cursor duplication use cursor caching
WT-3972 Allow more than 64K cursors to be open on a data source simultaneously
WT-3973 Allow alter to modify app_metadata
WT-3975 arg format mismatch after rwlock changes
WT-3977 Print out actual checkpoint stable timestamp in timestamp_abort
WT-3979 Fix warnings generated with newer Doxygen releases
WT-3980 failure returning a modified update without a backing "real" update
WT-3981 Make snapshot consistent with read_timestamp
WT-3982 Fix transaction visibility bugs related to lookaside usage.
WT-3984 Fix race conditions around prepare state transitions
WT-3985 Pre-allocated log files accumulate on Windows
WT-3987 Avoid reading lookaside pages in truncate fast path
WT-3990 Fix Coverity warnings mostly in test programs
WT-3996 Test truncate with timestamps and lookaside
WT-3997 The cursor walk code can spin without sleeping on restart/split.
WT-4002 Allow duplicates in api_data.py
WT-4005 AddressSanitizer in __wt_timestamp_iszero().
WT-4007 eviction instantiates pages from dead trees.
WT-4008 Add ARM NEON support for row search operations
WT-4011 Checkpoint should not read truncated pages
WT-4022 Avoid WT_RESTART error return during eviction walk
WT-4025 Allow debug dumping of internal pages

3.6.3 Changelog

Security

SERVER-31893 Explicitly define timeout for synchronous LDAP calls
SERVER-32086 Suppress LDAP user cache invalidation log message by default
SERVER-32779 Upgrade third_party tomcrypt to 1.18.1 final
SERVER-32933 Allow mongod to start when unable to reach LDAP server

Sharding

SERVER-27724 Explore whether we can further minimize chunk metadata reloads on shards
SERVER-28923 Add diagnosability and supportability features for retryable writes
SERVER-29423 Sharding balancer may schedule multiple migrations with the same source or destination
SERVER-30152 add safe secondary reads targeted tests for mapReduce
SERVER-30671 Don't expect operationTime to not change in causal_consistency_shell_support.js
SERVER-31860 setFCV on a cluster can fail to call setFCV on shards if the config server primary's ShardRegistry is empty
SERVER-31979 Chunk migration statistics are not recorded in the moveChunk.commit changelog entries
SERVER-32235 Blacklist core/drop3.js test from causally consistent workloadss
SERVER-32368 do not perform UUID check against a shard's config cache in the sharding_csrs_continuous_config_stepdown_WT suite
SERVER-32554 Source shard stepdown while entering critical section can trigger cloner invariant
SERVER-32568 The migration_sets_fromMigrate_flag.js test is not compatible with sharding continuous stepdown suite
SERVER-32569 Introduce uniform way to allow config servers and shard replica sets to start in non-cluster mode
SERVER-32592 Stepdown during migration cleanup can crash the source shard primary
SERVER-32593 CSRS stepdown during migration commit can trigger fassert on source shard primary
SERVER-32886 Unnecessary sleeps during chunk migration
SERVER-32901 Pull the CollectionShardingState map out of ShardingState
SERVER-32924 tag skip_sharding_configuration_checks test with requires_persistence tag
SERVER-32970 Put back random chunk size initialization in mongos auto split tracking
SERVER-33234 dropIndexes on mongos should ignore IndexNotFound from individual shards if some shard returned success

Replication

SERVER-21456 Improve closing connection behavior when stepping down from primary
SERVER-28290 stepping down due to a higher term seen in a heartbeat should not discard term after stepdown
SERVER-28895 Remove old form of replSetUpdatePosition command
SERVER-31707 Test changeStreams on a sharded collection where the shard doesn't know the collection is sharded
SERVER-32028 Make reconfig() in rslib.js resilient to NodeNotFound error
SERVER-32209 Reset the in-memory optimes on PV downgrade and upgrade
SERVER-32361 Rollback tests that expect a fatal assertion after node restart should not wait for connection
SERVER-32402 dropDatabase after step down can cause fassert
SERVER-32432 Race condition causes seg fault in ReplicationCoordinatorExternalStateImpl shutdown
SERVER-32532 Two-phase dropDatabase may not replicate all collection drops before the database drop.
SERVER-32556 Retryable write on local db hits an invariant
SERVER-32564 Increase assert.soon timeout when waiting for election in rollback_crud_op_sequences.js
SERVER-32624 dropDatabase() should wait for collection drops using ReplicationCoordinator::awaitReplication() instead of awaitReplicationOfLastOpForClient()
SERVER-32783 CollectionCloner::shutdown() should not block on resetting _verifyCollectionDroppedScheduler
SERVER-32794 Make timeouts unrelated to elections not depend on election timeout
SERVER-32803 stepup.js should retry replSetStepUp command when it is overtaking another primary
SERVER-32840 Remove pv0 jepsen tests
SERVER-32919 initial_sync_many_dbs.js should use less data

Query

SERVER-28260 Create a killAnyCursor privilege
SERVER-31484 Operation deadline and awaitData timeout should be separate
SERVER-31854 After the first drop, assertSchemaMatch() should assert that subsequent drops succeed
SERVER-32441 3.6 mongod crash on find with index and nested $and/$or
SERVER-32492 idhack_sharded.js should use _waitForDelete:true in moveChunk
SERVER-32606 Tailing oplog on secondary fails with CappedPositionLost
SERVER-33005 Contained $or access planning is incorrect for $elemMatch object, results in invariant failure
SERVER-33089 Unable to start queryable mongod because it failed to regenerate index for admin.system.users
SERVER-33092 elemMatchProjection.js incorrectly assumes that shell generates monotonically increasing _id values
SERVER-33333 Prevent failed cross user getMores from having side effects

Aggregation

SERVER-31760 Lookup sub-pipeline is not using index for equality match
SERVER-32349 Resuming a sharded change stream when there are multiple changes with the same timestamp may be impossible
SERVER-32690 Aggregation can trip invariant related to renamed fields optimization

Storage

SERVER-32259 Improve error handling for fetchTypeAndSourceURI()
SERVER-32274 Do not timestamp applyOps writes on standalones
SERVER-32533 In oplog truncate with WT, don't use a start key
SERVER-32573 Skip wt_delayed_secondary_read_concern_majority.js when running with WiredTiger's LSM tree
SERVER-32637 Ensure that upgrading to 3.6 when on pv0 doesn't break if you don't explicitly turn off readConcernMajority
SERVER-32851 setFeatureCompatibilityVersion can race with createCollection such that fCV 3.6 is set and some collections do not have UUIDs

Operations

SERVER-32072 DBRef with NumberInt ID changing to float in the shell
SERVER-32473 Error loading history file on first shell usage
SERVER-33140 mongodb+srv URI support broken on shell v3.6.2 for Windows

Build and Packaging

SERVER-32516 Fails to compile with Boost 1.66
SERVER-32580 Microbenchmarks: update the enterprise branch for mongo v3.6
SERVER-32649 got "used vector type where scalar is required" when using GCC 7
SERVER-32932 When testing SLES 12 packages make sure required repos exist
SERVER-33181 Upgrade ASIO to latest

Internals

SERVER-21630 Expand resmoke's CheckReplDBHash support to config servers and sharded replica sets
SERVER-28396 resmoke.py's logkeeper client should respect size limit for POST requests by splitting them up
SERVER-28822 Improve DBConnectionPool's growth semantics
SERVER-31636 Split up generational_jstestfuzz* Evergeen tasks into query_fuzzer and update_fuzzer tasks
SERVER-31670 Change replica set fixture used by replica_sets_jscore_passthrough to make its secondary have zero votes
SERVER-31768 Don't create the first collection chunk on a primary drained shard
SERVER-31886 Powercycle tasks running on Windows
SERVER-31935 Archive process of interest core dumps from remote EC2 instance
SERVER-31942 Large changes in unreliable tests can prevent test lifecycle update
SERVER-32060 Move MMAPv1 powercycle tasks to MMAPv1 specific variants
SERVER-32071 Powercycle - use internal crash
SERVER-32074 Powercycle - Add stack dump when SIGUSR1 or Windows event is received
SERVER-32090 Powercycle - pymongo client args are overwritten
SERVER-32107 Update DNS root nameservers for DNS Query test
SERVER-32110 Powercycle remote host not accessible in Evergreen timeout phase
SERVER-32161 MongoDB 3.2+ fails to compile on PPC64LE with glibc 2.26+
SERVER-32169 A cursor created with a session cannot be killed outside that session
SERVER-32197 Remote host is missing the debug symbols for hang_analyzer in evergreen.yml
SERVER-32203 Log the remote EC2 instance status when a failure to access it is detected in evergreen.yml
SERVER-32205 Dropping admin db sets fCV to 3.4 but leaves UUIDs
SERVER-32222 change_streams_primary_shard_unaware.js needs to be marked as requiring persistence
SERVER-32228 Powercycle - handle remote host restarts
SERVER-32243 Add an option to have the validate hook skip some collections.
SERVER-32260 Call workload_setup.py from mongo repo
SERVER-32298 Add a background system task to periodically copy remote statistics in evergreen.yml
SERVER-32299 Add disk statistics for remote EC2 instances
SERVER-32376 Blacklist tests that manually call startSession in the retryable_writes_jscore_stepdown_passthrough suite
SERVER-32403 Increase remote EC2 expire time to 3 hours
SERVER-32410 Validate User::CredentialData before attempting to perform authentication
SERVER-32414 Remove stale stdx:: requirements from lint.
SERVER-32429 black list regex_targeting.js from step down suites
SERVER-32468 Use a 1-node CSRS in non-stepdown sharding passthroughs tests
SERVER-32475 Microbenchmarks on v3.6 use master version of enterprise module
SERVER-32486 Windows builds of the shell should report the failing domain name in DNS lookup failures
SERVER-32515 Powercycle - rsync file exclude list
SERVER-32520 Add VPC support for launching AWS EC2 instances
SERVER-32522 set_read_and_write_concerns.js treats mapReduce "out" field like aggregation's $out stage
SERVER-32527 Update package tests to use new BUILD2 VPC
SERVER-32541 Disable Powercycle MMAPv1 task
SERVER-32551 Cluster with x.509 membership authentication serves client connection with cluster client certificate
SERVER-32585 Remove unnecessary dependencies from requirements.txt for ese_WT tests
SERVER-32609 update_test_lifecycle fails when a test group does not have historical data
SERVER-32614 update_test_lifecycle may fail because datetime.strptime() is not thread safe
SERVER-32631 specifying --bind_ip localhost results in error "address already in use"
SERVER-32664 Sys-perf enable running baselines at lower priority
SERVER-32680 Update perf projects to use newer baselines
SERVER-32691 Create passthrough for w="majority" with 2-node replica set to address lost test coverage
SERVER-32704 sys-perf: Skip validating oplog as enabled by SERVER-32243
SERVER-32740 Set bootstrap.ycsb_dir and bootstrap.workloads_dir in system_perf.yml
SERVER-32766 net.bindIpAll with net.ipv6 fails with "listen: Address already in use, terminating"
SERVER-32772 dbtest task in Evergreen should write to task directory
SERVER-32774 Ensure change_streams_secondary_reads suite has voting secondaries
SERVER-32788 Update "secondary performance" sysperf test to use nonvoting secondaries
SERVER-32806 retried findAndModify not using oplogHack when querying for pre/post image oplog entry
SERVER-32891 Sys-perf change order of mongodb_setup and workload_setup calls
SERVER-32896 Upload dsi-artifacts.yml in system_perf.yml
SERVER-32925 sys-perf 3.6 should run the change stream tests
SERVER-32987 Move the contents of the 'uuid' library to be under 'base'
SERVER-33068 run_check_repl_dbhash.js hook exits without actually running dbhash on a replica set
SERVER-33142 Experiment with disabling cluster reuse in system_perf.yml
SERVER-33147 Limit the -j/num_jobs_available for high core ARM CI servers
SERVER-33158 Logical Session refresh batches are too large
SERVER-33219 Add a backpressure mechanism to the CRUD client in backup_restore*.js tests
SERVER-33236 Update perf.yml to use ssh form of git clone
WT-2705 High throughput cache bound many threaded workloads can experience long latencies
WT-3074 Automate a test to stress eviction walk with many active trees
WT-3133 Detect or track long latency operations
WT-3295 Allow LSM to merge into custom data sources
WT-3565 Test and understand mixed timestamp/no-timestamp usage to same data
WT-3587 Remove HAVE_VERBOSE conditional compilation
WT-3597 Add a diagnostic check for updates to the same key out of timestamp order
WT-3632 Increase how granularly cache usage settings can be configured
WT-3654 Fix warning in Windows build on evergreen
WT-3695 format failed to report a stuck cache
WT-3716 Restore the WT_VERB_TEMPORARY verbose flag.
WT-3720 flags macros cast flags to unsigned values, hiding warnings.
WT-3725 Add statistics to locks around timestamp structures
WT-3732 Handle adding WT indices while cursors on the table are open
WT-3734 Fix undefined behavior in verbose output
WT-3738 Review internal session allocation accounting
WT-3740 race in page dirty-byte decrement.
WT-3750 Fast-path fs_directory_list of a single file.
WT-3753 Building on Windows --enable-java
WT-3766 Lookaside sweep for obsolete updates
WT-3767 Avoid lookaside instantiation for faster reads
WT-3768 Lookaside optimization: birthmarks
WT-3769 Fix a bug in reverse cursor walks with particular delete patterns and prefix compression enabled
WT-3772 Hot backup causes uncontrolled growth of WiredTigerPreplog files
WT-3774 Enhance Python lookaside testing to cover cursor modify
WT-3775 Improve commit timestamp is older than oldest timestamp error message
WT-3779 Add support for string formats with WT_CURSOR::modify
WT-3780 Improve error messages on invalid WT_CURSOR::modify usage
WT-3783 Fix transaction isolation to use the correct enum
WT-3787 test_compact02 failed as compaction halted due to eviction pressure
WT-3790 Switch statistics to rdtsc from epoch calls
WT-3792 LSM version 1 metadata incompatibility
WT-3793 WiredTiger page debug dump functions should unpack integer keys
WT-3794 Coverity 1383547 and lint
WT-3795 lint cleanups for the op-tracking software, reduce record write size.
WT-3796 Report a better error message if transaction commit fails
WT-3799 Test/format with timestamps enabled pin cache full
WT-3806 Make sure rdtsc values move forward in time
WT-3807 clang static analysis updates
WT-3809 Fix a bug in lookaside related to birthmarks
WT-3810 wt_rdtsc calibration needs to be longer and verify validity
WT-3811 Add basic ability to visualise operation tracking
WT-3812 debugging page output should handle complex key/value items.
WT-3816 Enable prefix compression on the lookaside table
WT-3818 __rec_txn_read() code order cleanup
WT-3819 clang static analysis improvements
WT-3820 Add a WT_SESSION.breakpoint method for Python debugging.
WT-3822 Update WiredTiger copyrights to 2018
WT-3824 tsc_nsec_ratio can compute to zero and cause divide by zero bug
WT-3825 Fix calculation of CPU ticks per unit time
WT-3826 random-abort test failure
WT-3827 test_compact02 failure
WT-3828 Link error on OS/X for __wt_process data reference
WT-3831 uninitialized buffer value in statlog server path comparison
WT-3832 Fixup shell script warning messages
WT-3833 test/format cache_minimum value error
WT-3835 cursor remove tries to return a key that doesn't exist
WT-3840 Dump more information when data corruption is encountered
WT-3841 Fix error message pattern in timestamp09
WT-3842 full-build Friday & lint
WT-3844 Checkpoints can hang on limbo pages
WT-3845 Compiler warning in examples using GCC 5.4.0
WT-3846 Refine operation tracking visualization tool
WT-3847 Add a stub API for prepared transaction
WT-3852 Update debugging when committing at an earlier timestamp
WT-3853 LSM version 1 metadata incompatibility
WT-3854 Remove write lock from commit path, leaving old entries in queue
WT-3860 lint

3.6.2 Changelog

Security

SERVER-31625 The contents of {USER} needs to be escaped when querying for the groups using LDAP server

Sharding

SERVER-28992 Cleanup mongos write commands execution
SERVER-31982 Shard does not call config commit chunk migration command with majority writeConcern nor checks for writeConcern errors.
SERVER-32202 Do not clear the cached sharding filtering information on replication state changes
SERVER-32255 UUIDs may be absent from shard secondary local collections
SERVER-32480 Remove CatalogCache retrieval methods, which take StringData
SERVER-32529 Requiring replSet for shards breaks Queryable Backup

Replication

SERVER-30626 Remove TopologyCoordinator interface
SERVER-31267 CollectionCloner fails if collection is dropped between getMore calls
SERVER-31684 QueryPlanKilled (operation exceeded time limit) in $changeStream with updateLookup
SERVER-31749 Clarify the reason temporary unique collection names are made
SERVER-32098 Disallow operations on drop-pending collections through applyOps
SERVER-32136 initial_sync_drop_collection.js should wait for system to stablize after restarting node
SERVER-32224 Disable chaining in initial_sync_drop_collection.js

Aggregation

SERVER-32282 Aggregation text search returns text score even if it wasn't requested when targeting multiple shards in a sharded cluster
SERVER-32430 DocumentSourceSort sorts array documents incorrectly if there is a non-simple collation

Storage

SERVER-29909 Libraries db/db_raii and db/s/sharding are directly cyclic
SERVER-31750 Always log renameCollections in our tests
SERVER-32242 Fix race in CompatibleFirstStress lock manager test
SERVER-32315 Remove IndexObserver

Operations

SERVER-32396 mongo shell failed to connect with 3.6 connection string SRV

Build and Packaging

SERVER-31875 Fix long link times on OS X by passing -no_deduplicate to the linker
SERVER-32415 MongoDB msi installer for Compass contains a typo

Internals

SERVER-30538 check that oplogTruncateAfterPoint is correct in PeriodicKillSecondaries hook
SERVER-31972 Reduce the number of iterations for the toggle_feature_compatibility.js workload
SERVER-31997 Add additional unittesting for CompatibleFirst policy
SERVER-32091 Powercycle - remove mongod.lock file for MMAPV1 test
SERVER-32145 Avoid dropping lock before cleaning up DocumentSourceCursor's PlanExecutor
SERVER-32246 PID file permission on v3.6 make it not not monitorable using pid file
SERVER-32497 implicitly_retry_on_database_drop_pending.js calls tojson() inside of a loop
SERVER-32500 Disable the sharding Evergreen task on the Enterprise OS X 10.10 MMAPv1 builder

3.6.1 Changelog

Sharding

SERVER-29397 Invariant failure on config server when inserting tag into config.tags
SERVER-30226 Force the recipient shard to refresh its metadata after migration commit
SERVER-30768 Primary queries using maxTimeMS cause temporary shard write unavailability if ExceededTimeLimit
SERVER-31056 Remove all usages of the default constructor of ScopedCollectionMetadata outside of MetadataManager
SERVER-31627 ShardingTest.checkUUIDsConsistentAcrossCluster can fail to see collection in config.cache.collections
SERVER-31865 setFCV on config server should only generate UUIDs for non-dropped sharded collections
SERVER-31984 A migration will simply report "Data transfer error" when we have rich error details on the destination shard that are logged but not returned to the user
SERVER-32043 Disallow users from creating new indexes in config.transactions
SERVER-32055 Improve multi thread performance for retryable writes
SERVER-32123 Enable sign range optimization for clusterTime
SERVER-32149 ShardingCatalogManager::getDatabasesForShard should check if query was successful
SERVER-32372 Mongos crashes on bulk inserts which size are slightly bigger than maxBsonObjectSize
SERVER-32385 "CommandNotFound: no such command" in mongodb logs on 3.6

Replication

SERVER-30457 Cancel catchup takeover if primary caught up according to heartbeats
SERVER-31990 Rollback can abort on long collection names.
SERVER-32085 $changeStream reports incorrect documentKey for unsharded collections that become sharded
SERVER-32114 Delete unused rollback code
SERVER-32131 ChangeStreams lookup_post_image.js test makes assumptions that don't hold up in secondary read passthrough
SERVER-32159 fix typo in sync_tail.cpp fillWriterVectorsAndLastestSessionRecords()
SERVER-32167 do a second majority write on oldPrimary before committed read in read_committed_after_rollback.js
SERVER-32178 Do not use IDL on oldest oplog entry

Query

SERVER-31978 Add an invariant that DocumentSourceCloseCursor does not execute on a mongod for a sharded $changeStream
SERVER-32046 Arrays of certain NumberDecimals can trigger an invariant failure
SERVER-32109 $rename does not update value if existing "to" field has the same numeric value but different type.
SERVER-32173 Add deprecation warning to "snapshot" option on queries

Write Operations

SERVER-8538 Deprecate $atomic/isolated update option
SERVER-32048 Updates using a numeric path component may cause index entries not to be created

Aggregation

SERVER-31731 Test that mongos accepts a --timeZoneInfo parameter, and can correctly execute expressions using time zones
SERVER-31885 changeStream cursor is not returned on a mongos when the database does not exist.

Storage

SERVER-31304 remove SnapshotName class
SERVER-31906 Test that applyOps can clone admin.system.version preserving its UUID
SERVER-31952 return error if collMod provides a UUID that does not match the UUID of the collection specified
SERVER-32022 allow enableMajorityReadConcern=false to work
SERVER-32118 applyOps view creation should not assign UUID
SERVER-32226 oldest_timestamp should track the last applied time, during initial sync

Operations

SERVER-29453 Disallow removing the featureCompatibilityVersion document

Build and Packaging

SERVER-32211 install_compass experience on OSX needs improvement
SERVER-32286 Remove Type=forking from Debian SystemD service file

Tools

TOOLS-1895 qa-dump-restore-archiving oplog_rollover_test.js

Internals

SERVER-30770 system_perf.yml: Use new DSI interface and cleanup
SERVER-31194 Add a version of retryable_writes_jscore_passthrough.yml with stepdowns
SERVER-31225 The mongod process forks before listening for connections
SERVER-31660 Bring BSONObj parsers back for IDL generated commands
SERVER-31791 UUIDs should be added to local collections for replica sets only on clean startup
SERVER-31808 HostAndPort for replSetInitiate() no longer finds hostname for localhost
SERVER-31845 WT performance regression with write retryability enabled
SERVER-31864 applyOps command with UUID containing op must require granular privileges
SERVER-32053 explain3.js should assert that its writes succeed
SERVER-32073 Improve signal given by list_local_sessions.js
SERVER-32087 Run test stage of sys-perf and mongo-perf failures should lead to red evergreen boxes
SERVER-32105 Require shard servers and config servers to be started with --replSet or 'replSetName'
SERVER-32106 Migration of txn oplog entries can trigger fassert in secondary replication
SERVER-32164 Shell SRV implementation does not allow authSource from TXT records to be used
SERVER-32238 Revert erroneous high error codes
TOOLS-1688 Evergreen tests broken in master
TOOLS-1827 Implement Initial DNS Seedlist discovery spec
TOOLS-1861 build.sh script doesn't abort on error
TOOLS-1878 qa-tests-unstable force_table_scan.js
TOOLS-1880 qa-tests-unstable no_primary_error_code.js
TOOLS-1881 qa-tests-unstable no_sharded_secondary_reads.js
WT-3079 Make sure eviction visits all trees
WT-3776 Cursor remove operation unpins page too early
WT-3786 Transactions with timestamps should read their writes

Back

Release Notes for MongoDB 3.6

Compatibility Changes in MongoDB 3.6

3.6 Changelog.leafygreen-ui-m0pgrr{-webkit-align-self:center;-ms-flex-item-align:center;align-self:center;padding:0 10px;visibility:hidden;}.leafygreen-ui-a30zj9{color:#889397;vertical-align:middle;margin-top:-2px;}.css-fmznk8{margin-top:-85px;position:absolute;padding-bottom:2px;}

3.6.23 Changelog

Query

Internals

3.6.22 Changelog

Sharding

Replication

Query

Storage

Build and Packaging

Internals

3.6.21 Changelog

Sharding

Replication

Query

Storage

Operations

Build and Packaging

Internals

3.6.20 Changelog

Replication

Query

Aggregation

Storage

Operations

Build and Packaging

Internals

3.6.19 Changelog

Sharding

Replication

Query

Storage

Operations

Build and Packaging

Internals

3.6.18 Changelog

Security

Sharding

Replication

Query

Aggregation

Storage

Operations

Build and Packaging

Internals

3.6.17 Changelog

Replication

Query

Aggregation

Storage

Build and Packaging

Internals

3.6.16 Changelog

Security

Sharding

Replication

Query

Storage

Build and Packaging

Internals

3.6.15 Changelog

Security

Sharding

Replication

Query

Aggregation

Storage

WiredTiger

Operations

Build and Packaging

Internals

3.6.14 Changelog

Security

Sharding

Replication

Query

Storage

WiredTiger

Operations

Build and Packaging

3.6 Changelog