fhan688 commented on PR #19226:
URL: https://github.com/apache/hudi/pull/19226#issuecomment-4976916757
> @fhan688 is there any bug we want to fix in this patch?
Yes. The bug is that MOR compaction rollback planning can be overly
conservative and leave compaction-produced files behind after the later delta
commits are no longer present.
This patch keeps the old base-file-only behavior when later delta commits
still exist, but allows full cleanup of the compaction instant when no later
delta commits remain. The requested-compaction changes are to keep
rollback/restore timeline-only for REQUESTED instants, so they do not generate
file-level rollback work.
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