Request Syntax Request Parameters Response Syntax Response Elements Errors See Also

CreateGlobalTable

Creates a global table from an existing table. A global table creates a replication relationship between two or more DynamoDB tables with the same table name in the provided Regions.

Important

This documentation is for version 2017.11.29 (Legacy) of global tables, which should be avoided for new global tables. Customers should use Global Tables version 2019.11.21 (Current) when possible, because it provides greater flexibility, higher efficiency, and consumes less write capacity than 2017.11.29 (Legacy).

To determine which version you're using, see Determining the global table version you are using. To update existing global tables from version 2017.11.29 (Legacy) to version 2019.11.21 (Current), see Upgrading global tables.

If you want to add a new replica table to a global table, each of the following conditions must be true:

The table must have the same primary key as all of the other replicas.
The table must have the same name as all of the other replicas.
The table must have DynamoDB Streams enabled, with the stream containing both the new and the old images of the item.
None of the replica tables in the global table can contain any data.

If global secondary indexes are specified, then the following conditions must also be met:

The global secondary indexes must have the same name.
The global secondary indexes must have the same hash key and sort key (if present).

If local secondary indexes are specified, then the following conditions must also be met:

The local secondary indexes must have the same name.
The local secondary indexes must have the same hash key and sort key (if present).

Important

Write capacity settings should be set consistently across your replica tables and secondary indexes. DynamoDB strongly recommends enabling auto scaling to manage the write capacity settings for all of your global tables replicas and indexes.

If you prefer to manage write capacity settings manually, you should provision equal replicated write capacity units to your replica tables. You should also provision equal replicated write capacity units to matching secondary indexes across your global table.

Request Syntax


{
   "GlobalTableName": "string",
   "ReplicationGroup": [ 
      { 
         "RegionName": "string"
      }
   ]
}

Request Parameters

The request accepts the following data in JSON format.

Note

In the following list, the required parameters are described first.

GlobalTableName

The global table name.

Type: String

Length Constraints: Minimum length of 3. Maximum length of 255.

Pattern: [a-zA-Z0-9_.-]+

Required: Yes

ReplicationGroup

The Regions where the global table needs to be created.

Type: Array of Replica objects

Required: Yes

Response Syntax


{
   "GlobalTableDescription": { 
      "CreationDateTime": number,
      "GlobalTableArn": "string",
      "GlobalTableName": "string",
      "GlobalTableStatus": "string",
      "ReplicationGroup": [ 
         { 
            "GlobalSecondaryIndexes": [ 
               { 
                  "IndexName": "string",
                  "OnDemandThroughputOverride": { 
                     "MaxReadRequestUnits": number
                  },
                  "ProvisionedThroughputOverride": { 
                     "ReadCapacityUnits": number
                  }
               }
            ],
            "KMSMasterKeyId": "string",
            "OnDemandThroughputOverride": { 
               "MaxReadRequestUnits": number
            },
            "ProvisionedThroughputOverride": { 
               "ReadCapacityUnits": number
            },
            "RegionName": "string",
            "ReplicaInaccessibleDateTime": number,
            "ReplicaStatus": "string",
            "ReplicaStatusDescription": "string",
            "ReplicaStatusPercentProgress": "string",
            "ReplicaTableClassSummary": { 
               "LastUpdateDateTime": number,
               "TableClass": "string"
            }
         }
      ]
   }
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

GlobalTableDescription

Contains the details of the global table.

Type: GlobalTableDescription object

Errors

For information about the errors that are common to all actions, see Common Errors.

GlobalTableAlreadyExistsException

The specified global table already exists.

HTTP Status Code: 400

InternalServerError

An error occurred on the server side.

HTTP Status Code: 500

LimitExceededException

There is no limit to the number of daily on-demand backups that can be taken.

For most purposes, up to 500 simultaneous table operations are allowed per account. These operations include CreateTable, UpdateTable, DeleteTable,UpdateTimeToLive, RestoreTableFromBackup, and RestoreTableToPointInTime.

When you are creating a table with one or more secondary indexes, you can have up to 250 such requests running at a time. However, if the table or index specifications are complex, then DynamoDB might temporarily reduce the number of concurrent operations.

When importing into DynamoDB, up to 50 simultaneous import table operations are allowed per account.

There is a soft account quota of 2,500 tables.

GetRecords was called with a value of more than 1000 for the limit request parameter.

More than 2 processes are reading from the same streams shard at the same time. Exceeding this limit may result in request throttling.

HTTP Status Code: 400

TableNotFoundException

A source table with the name TableName does not currently exist within the subscriber's account or the subscriber is operating in the wrong AWS Region.

HTTP Status Code: 400