[core] Refactor sort compact to produce COMPACT commits#8566
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Rewrite sort compact writes into COMPACT commits instead of OVERWRITE, preserve sequence ordering and hash-index consistency across Flink/Spark, and make commit-success detection safe when post-commit steps fail. Co-authored-by: Cursor <cursoragent@cursor.com>
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Remove unused imports and correct import ordering so CI licensing and build checks pass. Co-authored-by: Cursor <cursoragent@cursor.com>
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Purpose
Follow up on #7595 per this review comment: sort compact should not be modeled as an OVERWRITE commit with extra base-snapshot handling. Instead, it should produce a normal COMPACT commit so the existing commit protocol can perform compact validation and conflict detection.
This PR fixes the concurrent-write data loss risk in sort compact by refactoring Flink/Spark sort compact to:
No new overwritePartition(baseSnapshotId) APIs or special overwrite conflict logic are introduced.
Tests
Core
Flink
Spark