ADD AGGREGATOR

Warning

SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.

Syntax

SQL

ADD AGGREGATOR user[:'password']@'host':port;

Remarks

This command can be run on the master aggregator node, or a child aggregator node (see Node Requirements for SingleStore Commands ).
The specified user account must have full permissions on the node to execute this command, namely the cluster privilege. For more information, see Permissions Matrix.
Always use stable addresses for optimal function with this command.
This command causes implicit commits. Refer to COMMIT for more information.
See the Permission Matrix for the required permission.

Example

The following example demonstrates how to add a child aggregator to a cluster. Note that the client is connected to the master aggregator:

SQL

SHOW AGGREGATORS;

+-----------+------+--------+--------------------+------------------------------+-------------------+
| Host      | Port | State  | Opened_Connections | Average_Roundtrip_Latency_ms | Master_Aggregator |
+-----------+------+--------+--------------------+------------------------------+-------------------+
| 10.0.2.15 | 3306 | online |                  1 |                         NULL |                 1 |
+-----------+------+--------+--------------------+------------------------------+-------------------+
1 row in set (0.00 sec)

SQL

ADD AGGREGATOR root@'10.0.2.16':3306;

SHOW AGGREGATORS;

+-----------+------+--------+--------------------+------------------------------+-------------------+
| Host      | Port | State  | Opened_Connections | Average_Roundtrip_Latency_ms | Master_Aggregator |
+-----------+------+--------+--------------------+------------------------------+-------------------+
| 10.0.2.15 | 3306 | online |                  1 |                         NULL |                 1 |
| 10.0.2.16 | 3306 | online |                  0 |                        0.218 |                 0 |
+-----------+------+--------+--------------------+------------------------------+-------------------+
2 rows in set (0.00 sec)