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DROP TASK

Description​

Drops an asynchronous ETL task submitted using SUBMIT TASK. This feature has been supported since StarRocks v2.5.7.

NOTE

Dropping a task with DROP TASK simultaneously cancels the corresponding TaskRun.

Syntax​

DROP TASK `<task_name>` [FORCE]

Parameters​

ParameterRequiredDescription
task_nameYesThe name of the task to drop. Please wrap the task name with backticks (`) to prevent any parse failure.
FORCENoForces to drop the task.

Usage notes​

You can check the information of asynchronous tasks by querying the metadata views tasks and task_runs in Information Schema.

SELECT * FROM INFORMATION_SCHEMA.tasks;
SELECT * FROM information_schema.tasks WHERE task_name = '<task_name>';
SELECT * FROM information_schema.task_runs;
SELECT * FROM information_schema.task_runs WHERE task_name = '<task_name>';

You can obtain the task_name of materialized view refresh tasks by using the SHOW MATERIALIZED VIEWS statement.

SHOW MATERIALIZED VIEWS;
SHOW MATERIALIZED VIEWS WHERE name = '<mv_name>';

Examples​

MySQL > SUBMIT /*+set_var(query_timeout=100000)*/ TASK `ctas` AS
    -> CREATE TABLE insert_wiki_edit_new
    -> AS SELECT * FROM source_wiki_edit;
+----------+-----------+
| TaskName | Status    |
+----------+-----------+
| ctas     | SUBMITTED |
+----------+-----------+
1 row in set (1.19 sec)

MySQL > DROP TASK `ctas`;
Query OK, 0 rows affected (0.35 sec)