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Posted to issues@paimon.apache.org by "JingsongLi (via GitHub)" <gi...@apache.org> on 2026/07/15 00:09:00 UTC

Re: [PR] [flink] size aware partitioner for full compaction job [paimon]

JingsongLi commented on PR #8583:
URL: https://github.com/apache/paimon/pull/8583#issuecomment-4975322024

   When `size-aware-batch` is enabled and `scan.split-enumerator.mode=preemptive`, the source ignores the bucket grouping function, but the sink skips the bucket shuffle. Multiple splits from the same bucket may end up in different writers, resulting in concurrent full compaction. It is recommended to enforce or validate `FAIR`, or to implement grouping and allocation for `PREEMPTIVE`.


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