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Posted to issues@flink.apache.org by "Hongshun Wang (Jira)" <ji...@apache.org> on 2024/03/12 02:11:00 UTC

[jira] [Commented] (FLINK-34648) Avoid RPC time when apply SchemaChangeEvent to external system

    [ https://issues.apache.org/jira/browse/FLINK-34648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17825490#comment-17825490 ] 

Hongshun Wang commented on FLINK-34648:
---------------------------------------

During the process of task recovery,  will the enumerator not restart?

> Avoid RPC time when apply SchemaChangeEvent to external system
> --------------------------------------------------------------
>
>                 Key: FLINK-34648
>                 URL: https://issues.apache.org/jira/browse/FLINK-34648
>             Project: Flink
>          Issue Type: Improvement
>          Components: Flink CDC
>    Affects Versions: cdc-3.1.0
>            Reporter: LvYanquan
>            Priority: Major
>             Fix For: cdc-3.1.0
>
>
> When SchemaOperator receive SchemaChangeEvent, it will send request to SchemaRegistry and wait for applying this SchemaChangeEvent to external system synchronously.
> However, if this process take too long time, it will cause RPC TimeoutException, and During the process of task recovery, there may be other errors like `AddColumnEvent is already existed`.



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