TrackedUnshardedCollectionHasInvalidKey

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Description

Format
Example

Description

TrackedUnshardedCollectionHasInvalidKey: An unsharded collection has an invalid shard key.
New in version 8.0.

Format

{
   type: "TrackedUnshardedCollectionHasInvalidKey",
   description: "<string>",
   details: {
      namespace: "<string>",
      uuid: UUID("<uuid>"),
      shardKey: <document>
   }
}

TrackedUnshardedCollectionHasInvalidKey inconsistency documents contain these fields:

Field	Type	Description
`type`	string	Type of inconsistency document. Returns a value of `TrackedUnshardedCollectionHasInvalidKey` for this inconsistency type.
`description`	string	Describes 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.uuid`	UUID	UUID of the collection registered on the sharding catalog.
`details.shardKey`	document	Collection shard key pattern.

Example

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 TrackedUnshardedCollectionHasInvalidKey inconsistency document:

{
   cursor: {
      id: Long("0"),
      ns: "test.$cmd.aggregate",
      firstBatch: [
         {
            type: "TrackedUnshardedCollectionHasInvalidKey",
            description: "Found tracked unsharded collection with invalid shard-key",
            details: {
               namespace: "test.authors",
               uuid: UUID("ebfba414-b576-4f77-bb0e-0d56f3a53c55"),
               shardKey: { "name": 1 }
            }
         }
      ],
   },
   ok: 1
}

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ShardThinksCollectionIsUnsharded

TrackedUnshardedCollectionHasMultipleChunks