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ddl: add admin pause/resume commands #13294

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Apr 25, 2023
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ddl: add admin pause/resume commands #13294

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add admin pause/resume commands
ran-huang Apr 19, 2023
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ran-huang Apr 20, 2023
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Update ddl-introduction.md
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Expand Up @@ -178,6 +178,14 @@ When TiDB is adding an index, the phase of backfilling data will cause read and

If a completed DDL task is canceled, you can see the `DDL Job:90 not found` error in the `RESULT` column, which means that the task has been removed from the DDL waiting queue.

- `ADMIN PAUSE DDL JOBS job_id [, job_id]`: Used to pause the DDL tasks that are being executed. After the command is executed, the SQL statement that executes the DDL task is displayed as being executed, and the background task is paused.

Tasks that are not being executed or waiting cannot be paused. The `Job 3 can't be paused now` error is shown in the `RESULT` column.
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- `ADMIN RESUME DDL JOBS job_id [, job_id]`: Used to resume the DDL tasks that have been paused. After the command is executed, the SQL statement that executes the DDL task is displayed as being executed, and the background task is resumed.

Tasks that are not paused cannot be resumed. The `Job 3 can't be resumed` error is shown in the `RESULT` column.
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## Common questions

For common questions about DDL execution, see [SQL FAQ - DDL execution](/faq/sql-faq.md#ddl-execution).