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https://issues.apache.org/jira/browse/FLINK-41387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-41387:
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Labels: pull-request-available (was: )
> Reduce unnecessary ADD COLUMN requests in the Fluss pipeline sink
> -----------------------------------------------------------------
>
> Key: FLINK-41387
> URL: https://issues.apache.org/jira/browse/FLINK-41387
> Project: Flink
> Issue Type: Improvement
> Components: Flink CDC
> Reporter: Xiaobing Fang
> Priority: Major
> Labels: pull-request-available
>
> h3. Motivation
> The goal is to reduce unnecessary ADD COLUMN requests in Fluss-to-Fluss
> pipelines where columns are added to the target before the source. When the
> source emits the corresponding AddColumnEvent, the sink submits all requested
> columns to Fluss. If any already exist, Fluss rejects the request, and only
> then does the sink check the target schema. Across many tables, this produces
> a failed DDL request for each such event.
> h3. Expected behavior
> Check the target schema before issuing ADD COLUMN and submit only missing
> columns. For example, if an event requests columns a and b and the target
> already has a with the matching type, send one request to add b. If both
> columns already exist with matching types, complete the event without issuing
> an ADD COLUMN request.
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