Database Manual / Sharding / Reference / Inconsistency Types

RoutingTableMissingMinKey

Description

RoutingTableMissingMinKey

A range gap exists in the routing table. The first chunk does not start from the minimum key value.

New in version 7.0.

Format

{
   type: "RoutingTableMissingMinKey",
   description: "<string>",
   details: {
      namespace: "<string>",
      collectionUUID: <string>,
      minKeyObj: { <document> },
      globalMin: { <document> }
   }
}

RoutingTableMissingMinKey inconsistency documents contain the following fields:

FieldTypeDescription

type

string

Type of inconsistency document. Returns a value of RoutingTableMissingMinKey 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.collectionUUID

UUID

UUID of the collection.

details.minKeyObj

document

The minimum key used by the collection.

details.globalMin

document

The expected minimum key of the collection.

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 RoutingTableMissingMinKey inconsistency document:

{
   cursor: {
      id: Long("0"),
      ns: "test.$cmd.aggregate",
      firstBatch: [
         {
            type: "RoutingTableMissingMinKey",
            description: "Routing table has a gap because first chunk does not start from MinKey",
            details: {
               namespace: "test.authors",
               collectionUUID: new UUID("62ebdb7e-a7bb-4151-a620-49d44cef097f"),
               minKeyObj: {
                  x: 0
               },
               globalMin: {
                  x: MinKey
               }
            }
         }
      ],
   },
   ok: 1
}