[tiering] Fix Paimon IOManager leak in MergeTreeWriter causing /tmp disk exhaustion#3193
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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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