[BP-2.3][FLINK-39964][state] Fix unrestorable checkpoint after CLAIM restore from native savepoint - #28839
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[BP-2.3][FLINK-39964][state] Fix unrestorable checkpoint after CLAIM restore from native savepoint#28839Savonitar wants to merge 2 commits into
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…ry twice testSavepointDeepCopy listed savepointPath1 for both stateFiles1 and stateFiles2, so the copied-files assertion compared savepoint1's directory with itself and savepoint2's directory was never examined at all. Point stateFiles2 at savepointPath2, as the variable name, the assertion messages, and the test's documented steps always intended. The mix-up was introduced when the getFileNamesInDirectory helper was extracted (f125067); before that, both checks listed savepointPath2. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> (cherry picked from commit 1a2f458)
…from native savepoint The first incremental checkpoint after a CLAIM-mode restore from a native savepoint reuses the savepoint's SST files as RelativeFileStateHandles. The metadata serializer stored only their relative path, so on restore they were resolved against the new checkpoint's exclusive directory and could no longer be found. The serializer now knows the exclusive directory of the checkpoint being written (CheckpointMetadataOutputStream#getExclusiveCheckpointDir, passed down as a non-null SerializationContext) and keeps the compact relative encoding only for handles whose file actually lives in that directory; a foreign handle (a reused savepoint SST) is persisted with its absolute path using the pre-existing FileStateHandle encoding. The wire format and the metadata version are unchanged. The state processor API keeps the unconditional relative encoding via the explicit Checkpoints#storeCheckpointMetadataWithoutExclusiveDir, because its deep copy places every referenced file next to the new metadata. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> (cherry picked from commit 07bcbd9)
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snuyanzin
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Jul 30, 2026
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Thanks for contribution
since you use AI, can you use Generated-by: instead of Co-authored-by: as mentioned in Apache recommendations https://www.apache.org/legal/generative-tooling.html
also the doc about this is in https://github.com/apache/flink/pull/27776/changes#r2979585031
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Backport of #28709
Was generative AI tooling used to co-author this PR?
Claude Fable 5