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ticdc: update troubleshoot for ddl skip (#5695) #5697

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May 28, 2021
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ticdc: update troubleshoot for ddl skip (#5695) #5697

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Update troubleshoot-ticdc.md
Joyinqin May 26, 2021
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TomShawn May 28, 2021
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TomShawn May 28, 2021
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TomShawn May 28, 2021
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4 changes: 2 additions & 2 deletions ticdc/troubleshoot-ticdc.md
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Expand Up @@ -318,9 +318,9 @@ If you encounter an error above, it is recommended to use BR to restore the incr
## When the downstream of a changefeed is a database similar to MySQL and TiCDC executes a time-consuming DDL statement, all other changefeeds are blocked. How should I handle the issue?

1. Pause the execution of the changefeed that contains the time-consuming DDL statement. Then you can see that other changefeeds are no longer blocked.
2. Search for the `apply job` field in the TiCDC log and confirm the `StartTs` of the time-consuming DDL statement.
2. Search for the `apply job` field in the TiCDC log and confirm the `start-ts` of the time-consuming DDL statement.
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@Joyinqin Please apply version-specific change. Thanks!

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@TomShawn Updated~PTAL thx

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3. Manually execute the DDL statement in the downstream. After the execution finishes, go on performing the following operations.
4. Modify the changefeed configuration and add the above `StartTs` to the `ignore-txn-start-ts` configuration item.
4. Modify the changefeed configuration and add the above `start-ts` to the `ignore-txn-start-ts` configuration item.
5. Resume the paused changefeed.

## After I upgrade the TiCDC cluster to v4.0.8, the `[CDC:ErrKafkaInvalidConfig]Canal requires old value to be enabled` error is reported when I execute a changefeed
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