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https://issues.apache.org/jira/browse/FLINK-36541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leonard Xu reassigned FLINK-36541:
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Assignee: Yanquan Lv
> Occasional met commit conflict problem in PaimonSink.
> -----------------------------------------------------
>
> Key: FLINK-36541
> URL: https://issues.apache.org/jira/browse/FLINK-36541
> Project: Flink
> Issue Type: Improvement
> Components: Flink CDC
> Affects Versions: cdc-3.3.0
> Reporter: Yanquan Lv
> Assignee: Yanquan Lv
> Priority: Major
> Labels: pull-request-available
> Fix For: cdc-3.3.0
>
> Attachments: image-2024-10-15-20-36-03-495.png
>
>
> When writing records to Paimon, we occasional met commit conflict problem
> even if Parallelism is 1.
> It turns out that PaimonWriter preparecommit Committable with a checkpointId
> which is always 1, as the following code:
> [https://github.com/apache/flink-cdc/blob/a1781f432d906fa2a864642a5f74ac5bdc963d9c/flink-cdc-connect/flink-cdc-pipeline-connectors/flink-cdc-pipeline-connector-paimon/src/main/java/org/apache/flink/cdc/connectors/paimon/sink/v2/PaimonWriter.java#L164-L178]
> !image-2024-10-15-20-36-03-495.png!
> This is actually an incorrect usage, we must pass in an increasing ID to
> ensure the correctness of the snapshot information.
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