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Posted to issues@celeborn.apache.org by "xumingming (via GitHub)" <gi...@apache.org> on 2026/05/28 03:09:48 UTC

[PR] [CELEBORN-2342] Fix object aliasing in LegacySkewHandlingPartitionValidator corrupting sub-range metadata [celeborn]

xumingming opened a new pull request, #3708:
URL: https://github.com/apache/celeborn/pull/3708

   
   ### What changes were proposed in this pull request?
   
   When an AQE-skewed partition is split into N sub-ranges, the first sub-range's CommitMetadata object was stored by reference in both subRangeToCommitMetadataMap and currentCommitMetadataForReducer. Each subsequent sibling RPC mutated that object in-place via addCommitData(), silently inflating the TreeMap entry from bytes(A) to bytes(A)+bytes(siblings). Any task retry then sent the correct bytes(A) but found the inflated value, causing a permanent CelebornIOException mismatch and job abort.
   
   
   ### Why are the changes needed?
   
   This is a bug of E2E Integrity Check.
   
   
   ### Does this PR resolve a correctness bug?
   
   - [ ] Yes
   
   ### Does this PR introduce _any_ user-facing change?
   
   - [ ] Yes
   
   
   ### How was this patch tested?
   
   Added Unit Test.


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Re: [PR] [CELEBORN-2342] Fix object aliasing in LegacySkewHandlingPartitionValidator corrupting sub-range metadata [celeborn]

Posted by "SteNicholas (via GitHub)" <gi...@apache.org>.
SteNicholas commented on PR #3708:
URL: https://github.com/apache/celeborn/pull/3708#issuecomment-4590271867

   Thanks for fix. Merged to main(v0.7.0).


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Re: [PR] [CELEBORN-2342] Fix object aliasing in LegacySkewHandlingPartitionValidator corrupting sub-range metadata [celeborn]

Posted by "xumingming (via GitHub)" <gi...@apache.org>.
xumingming commented on PR #3708:
URL: https://github.com/apache/celeborn/pull/3708#issuecomment-4560525308

   @gauravkm Can you help review this PR?


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Re: [PR] [CELEBORN-2342] Fix object aliasing in LegacySkewHandlingPartitionValidator corrupting sub-range metadata [celeborn]

Posted by "SteNicholas (via GitHub)" <gi...@apache.org>.
SteNicholas closed pull request #3708: [CELEBORN-2342] Fix object aliasing in LegacySkewHandlingPartitionValidator corrupting sub-range metadata
URL: https://github.com/apache/celeborn/pull/3708


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