Kill Query

Kill connection

In Doris, each connection runs in a separate thread. You can terminate a thread using the KILL processlist_idstatement.

The processlist_id for the thread can be found in the Id column from the SHOW PROCESSLIST output. Or you can use the SELECT CONNECTION_ID() command to query the current connection id.

Syntax:

  1. KILL [CONNECTION] processlist_id

Kill query

You can also terminate the query command under execution based on the processlist_id or the query_id.

Syntax:

  1. KILL QUERY processlist_id | query_id

Example

  1. Check the current connection id.
  1. mysql select connection_id();
  2. +-----------------+
  3. | connection_id() |
  4. +-----------------+
  5. | 48              |
  6. +-----------------+
  7. 1 row in set (0.00 sec)
  1. Check all connection id.
  1. mysql SHOW PROCESSLIST;
  2. +------------------+------+------+--------------------+---------------------+----------+---------+---------+------+-------+-----------------------------------+---------------------------------------------------------------------------------------+
  3. | CurrentConnected | Id   | User | Host               | LoginTime           | Catalog  | Db      | Command | Time | State | QueryId                           | Info                                                                                  |
  4. +------------------+------+------+--------------------+---------------------+----------+---------+---------+------+-------+-----------------------------------+---------------------------------------------------------------------------------------+
  5. | Yes              |   48 | root | 10.16.xx.xx:44834   | 2023-12-29 16:49:47 | internal | test | Query   |    0 | OK    | e6e4ce9567b04859-8eeab8d6b5513e38 | SHOW PROCESSLIST                                                                      |
  6. |                  |   50 | root | 192.168.xx.xx:52837 | 2023-12-29 16:51:34 | internal |      | Sleep   | 1837 | EOF   | deaf13c52b3b4a3b-b25e8254b50ff8cb | SELECT @@session.transaction_isolation                                                |
  7. |                  |   51 | root | 192.168.xx.xx:52843 | 2023-12-29 16:51:35 | internal |      | Sleep   |  907 | EOF   | 437f219addc0404f-9befe7f6acf9a700 | /* ApplicationName=DBeaver Ultimate 23.1.3 - Metadata */ SHOW STATUS                  |
  8. |                  |   55 | root | 192.168.xx.xx:55533 | 2023-12-29 17:09:32 | internal | test | Sleep   |  271 | EOF   | f02603dc163a4da3-beebbb5d1ced760c | /* ApplicationName=DBeaver Ultimate 23.1.3 - SQLEditor <Console> */ SELECT DATABASE() |
  9. |                  |   47 | root | 10.16.xx.xx:35678   | 2023-12-29 16:21:56 | internal | test | Sleep   | 3528 | EOF   | f4944c543dc34a99-b0d0f3986c8f1c98 | select * from test                                                                    |
  10. +------------------+------+------+--------------------+---------------------+----------+---------+---------+------+-------+-----------------------------------+---------------------------------------------------------------------------------------+
  11. 5 rows in set (0.00 sec)
  1. Kill the currently running query, which will then be displayed as canceled.
  1. mysql kill query 55;
  2. Query OK, 0 rows affected (0.01 sec)