CollectionOptionsMismatch

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Description

Format
Example

Description

CollectionOptionsMismatch: A collection contains mismatching options across different shards.
New in version 8.0.

Format

{
   type: "CollectionOptionsMismatch",
   description: "<string>",
   details: {
      namespace: "<string>",
      options: <array>
   }
}

CollectionOptionsMismatch inconsistency documents contain these fields:

Field	Type	Description
`type`	string	Type of inconsistency document. Returns a value of `CollectionOptionsMismatch` 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.options`	array	Lists the mismatching options found per shard or config server.

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 CollectionOptionsMismatch inconsistency document:

{
   cursor: {
      id: Long("0"),
      ns: "test.$cmd.aggregate",
      firstBatch: [
         {
            type: "CollectionOptionsMismatch",
            description: "Found collection with mismatching options across shards and/or config server",
            details: {
               namespace: "test.authors",
               options: [
                  { "options": { "capped": true }, "shards": [ "shard0" ] },
                  { "options": { "capped": false }, "shards": [ "shard1", "config" ] }
               ]
            }
         }
      ],
   },
   ok: 1
}

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Inconsistency Types

CollectionUUIDMismatch