LvYanquan created FLINK-36541:
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Summary: 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: LvYanquan
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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