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RoutingTableRangeOverlap

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RoutingTableRangeOverlap

The routing table of a collection contains two chunks with overlapping shard key ranges.

New in version 7.0.

{
type: "RoutingTableRangeOverlap",
description: "<string>",
details: {
namespace: "<string>",
collectionUUID: <string>,
chunkA: {<document>},
chunkB: {<document>}
}
}

RoutingTableRangeOverlap inconsistency documents contain the following fields:

Field
Type
Description
type
string

Type of inconsistency document. Returns a value of RoutingTableRangeOverlap for this inconsistency type.

description
string

Describes the nature of the inconsistency found in the metadata.

details
document

Document with additional information on where the inconsistency exists in the database and sharded cluster.

details.namespace
string

Indicates the database and collection where the inconsistency exists.

details.collectionUUID
UUID

UUID of the collection.

details.chunkA
document
The first chunk that overlaps with the second chunk.
details.chunkB
document
The second chunk that overlaps with the first chunk.

Use the db.adminCommand() method to call the checkMetadataConsistency command:

db.adminCommand( { checkMetadataConsistency: 1 } )

The method returns a cursor with a batch of documents showing the inconsistencies found in the sharding metadata. The example below shows a cursor with a RoutingTableRangeOverlap inconsistency document:

{
cursor: {
id: Long("0"),
ns: "test.$cmd.aggregate",
firstBatch: [
{
type: "RoutingTableRangeOverlap",
description: "Found two overlapping consecutive chunks",
details: {
namespace: "test.authors",
collectionUUID: new UUID("62ebdb7e-a7bb-4151-a620-49d44cef097f"),
chunkA: {
_id: ObjectId("64dde749ac6045c92ef3b9ad"),
uuid: new UUID("8c83ea89-ab6b-4ae4-91ab-813cf781284d"),
min: {
x: MinKey
},
max: {
x: 0
},
shard: "shard0000",
lastmod: Timestamp(1, 0),
onCurrentShardSince: Timestamp(1, 0),
history: [
{
validAfter: Timestamp(1, 0),
shard: "shard0000"
}
]
},
chunkB: {
_id: ObjectId("64dde749ac6045c92ef3b9af"),
uuid: new UUID("8c83ea89-ab6b-4ae4-91ab-813cf781284d"),
min: {
x: -10
},
max: {
x: MaxKey
},
shard: "shard0000",
lastmod: Timestamp(1, 0),
onCurrentShardSince: Timestamp(1, 0),
history: [
{
validAfter: Timestamp(1, 0),
shard: "shard0000"
}
]
}
}
}
],
},
ok: 1
}

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