Kill the connection on the specified thread. Rolls back any query running on the thread.

Syntax

KILL CONNECTION <internal_process_id> [<node_id>]
KILL QUERY <query_id> [<node_id>]

Arguments

• internal_process_id - ID of the thread to kill.
• query_id - ID of the query to kill.
• node_id - ID of the node (aggregator) on which the query/thread is running. If the node_id is not specified, the query/thread running on the current node is killed.
  Info

  You can query the information_schema.MV_PROCESSLIST table for the required parameter values, where the ID field in the table contains the thread/query ID and the NODE_ID field contains the ID of the node.

Remarks

• internal_process_id - ID of the thread to kill, which can be found by running SHOW_PROCESSLIST.
• KILL CONNECTION will disconnect the client associated with internal_process_id. This is the default, meaning that running KILL <> will have the same result.
• KILL QUERY allows you to kill a query running on any aggregator in the cluster.
• KILL QUERY will not disconnect the client associated with internal_process_id. Instead, the client will receive an error.
• Any query running on the connection will be rolled back.
• MemSQL checks for the kill bit during any potentially long running loop during query execution and rolls back the query’s transaction if the kill bit is set.
• This command should be run on the master aggregator or a child aggregator node (see Node Requirements for MemSQL Commands).

Example

memsql> KILL CONNECTION 3123;
Query OK, 0 rows affected (0.00 sec)

Related Topics

• SHOW PROCESSLIST

Was this Article Helpful?

Thanks For Your Feedback!