Database Manual / Sharding / Reference / Inconsistency Types

RoutingTableMissingMaxKey

Description描述

RoutingTableMissingMaxKey

A range gap exists in the routing table. The last chunk boundary in the routing table does not reach the maximum key value.路由表中存在范围间隙。路由表中的最后一个块边界未达到最大键值。

New in version 7.0.在版本7.0中新增。

Format格式

{
   type: "RoutingTableMissingMaxKey",
   description: "<string>",
   details: {
      namespace: "<string>",
      collectionUUID: <string>,
      maxKeyObj: { <document> },
      globalMax: { <document> }
   }
}

RoutingTableMissingMaxKey inconsistency documents contain the following fields:不一致文档包含以下字段：

Field字段Type类型Description描述
typestring字符串Type of inconsistency document. Returns a value of RoutingTableMissingMaxKey for this inconsistency type.不一致文档的类型。返回此不一致类型的RoutingTableMissingMaxKey值。
descriptionstring字符串Describes the inconsistency found in the metadata.描述元数据中发现的不一致。
detailsdocument文档Document with additional information on where the inconsistency exists in the database and sharded cluster.包含数据库和分片集群中不一致位置的附加信息的文档。
details.namespacestring字符串Indicates the database and collection where the inconsistency exists.指示存在不一致的数据库和集合。
details.collectionUUIDUUIDUUID of the collection.集合的UUID。
details.maxKeyObjdocument文档The max key used by the collection.集合使用的max键。
details.globalMaxdocument文档The expected max key of the collection.集合的预期最大键。

Example示例

Use the db.adminCommand() method to call the checkMetadataConsistency command:使用db.adminCommand()方法调用checkMetadataConsistency命令：

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 RoutingTableMissingMaxKey inconsistency document:该方法返回一个游标，其中包含一批文档，显示分片元数据中发现的不一致。下面的示例显示了带有RoutingTableMissingMaxKey不一致文档的游标：

{
   cursor: {
      id: Long("0"),
      ns: "test.$cmd.aggregate",
      firstBatch: [
         {
            type: "RoutingTableMissingMaxKey",
            description: "Routing table has a gap because last chunk boundary does not reach MaxKey",
            details: {
               namespace: "test.authors",
               collectionUUID: new UUID("62ebdb7e-a7bb-4151-a620-49d44cef097f"),
               maxKeyObj: {
                  x: 0
               },
               globalMax: {
                  x: MaxKey
               }
            }
         }
      ],
   },
   ok: 1
}