MySQL AI User Guide

4.8 Monitoring the Status of AutoML

You can monitor the status of AutoML by querying the rapid_ml_status variable or by querying the ML_STATUS column of the performance_schema.rpd_nodes table.

Query the rapid_ml_status Variable

The rapid_ml_status variable provides the status of AutoML. Possible values are ON and OFF.

  • ON: AutoML is up and running.

  • OFF: AutoML is down.

The following example queries the rapid_ml_status status variable directly. 

mysql> SHOW GLOBAL STATUS LIKE 'rapid_ml_status';
+-----------------+-------+
| Variable_name   | Value |
+-----------------+-------+
| rapid_ml_status | ON    |
+-----------------+-------+

The following example queries the rapid_ml_status status through the performance_schema.global_status table. 

mysql> SELECT VARIABLE_NAME, VARIABLE_VALUE
       FROM performance_schema.global_status
       WHERE VARIABLE_NAME LIKE 'rapid_ml_status';
+-----------------+----------------+
| VARIABLE_NAME   | VARIABLE_VALUE |
+-----------------+----------------+
| rapid_ml_status | ON             |
+-----------------+----------------+

Query the ML_STATUS Column

The MySQL AI plugin writes AutoML status information to the ML_STATUS column of the performance_schema.rpd_nodes table after each AutoML query. Possible values include:

  • UNAVAIL_MLSTATE: AutoML is not available.

  • AVAIL_MLSTATE: AutoML is available.

  • DOWN_MLSTATE: AutoML is down.

ML_STATUS is reported for each node.

You can query the ML_STATUS column of the performance_schema.rpd_nodes table.

To following example retrieves ID, STATUS, and ML_STATUS for each node from the performance_schema.rpd_nodes table: 

mysql> SELECT ID, STATUS, ML_STATUS FROM performance_schema.rpd_nodes; 
+----+---------------+---------------+
| ID | STATUS        | ML_STATUS     |
+----+---------------+---------------+
|  0 | AVAIL_RNSTATE | AVAIL_MLSTATE |
+----+---------------+---------------+

Resolve a Down Status for AutoML

If rapid_ml_status is OFF or ML_STATUS reports DOWN_MLSTATE for any node, you can restart the MySQL server and Cluster. Be aware that restarting interrupts any analytics queries that are running.

See the following to learn more:

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