[tiering] Fix Paimon IOManager leak in MergeTreeWriter causing /tmp disk exhaustion#3193
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luoyuxia merged 1 commit intoapache:release-0.9apache/fluss:release-0.9from Apr 24, 2026
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[tiering] Fix Paimon IOManager leak in MergeTreeWriter causing /tmp disk exhaustion#3193luoyuxia merged 1 commit intoapache:release-0.9apache/fluss:release-0.9from luoyuxia:release-0.9-fix-io-managerluoyuxia/fluss:release-0.9-fix-io-managerCopy head branch name to clipboard
luoyuxia merged 1 commit intoapache:release-0.9apache/fluss:release-0.9from
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…isk exhaustion The IOManager created in MergeTreeWriter.createTableWrite() was passed inline to withIOManager() without keeping a reference. Since Paimon's TableWriteImpl does not own the IOManager lifecycle, it was never closed, leaving paimon-io-<UUID> directories in /tmp after each tiering task. This fix stores the IOManager as a field and explicitly closes it in close() via a finally block, ensuring temp directories are cleaned up. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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The IOManager created in MergeTreeWriter.createTableWrite() was passed inline to withIOManager() without keeping a reference. Since Paimon's TableWriteImpl does not own the IOManager lifecycle, it was never closed, leaving paimon-io- directories in /tmp after each tiering task.
This fix stores the IOManager as a field and explicitly closes it in close() via a finally block, ensuring temp directories are cleaned up.
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Linked issue: close #xxx
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