[flink] support detecting fields changes for dedicated compaction in streaming mode #6690
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JingsongLi
reviewed
Nov 27, 2025
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Introduce a CompactRefresher which can wrap WriterRefresher.
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Purpose
Linked issue: close #xxx
If new columns have been added to the table and new files containing these columns have been written while the dedicated compaction job in streaming mode has not been restarted, it may cause data loss. Specifically, the data from the new columns may be lost after compaction.
This pr will detect schema changes for newly added files for dedicated compaction in streaming mode, if schema of files has changed, the
writewill be refreshed.Tests
API and Format
Documentation