[GH] (flink-cdc/fix/iceberg-duplication-same-checkpoint): Workflow run "Flink CDC CI" failed!

[GitBox <gi...@apache.org>]

The GitHub Actions job "Flink CDC CI" on flink-cdc.git/fix/iceberg-duplication-same-checkpoint has failed.
Run started by GitHub user spoorthibasu (triggered by lvyanquan).

Head commit for run:
725a8e4a7070976251da7eea4f5c158750681b35 / Spoorthi Basu <sp...@gmail.com>
[iceberg] Restore flush to clear factory cache for schema reload

flush(boolean) was a no-op to avoid splitting same-PK updates into
multiple batches within a checkpoint. But without clearing the writer
factory cache, new writes after a checkpoint could use a stale factory
that doesn't reflect schema changes applied by IcebergMetadataApplier.

Change flush to clear writerFactoryMap only. Writers themselves keep
running so same-PK updates within a checkpoint go through the same
writer and use position deletes (exact file+offset), which work
correctly within a single snapshot without needing a separate seq_num.

Schema-change flushes still go through flushTableWriter(tableId), which
drains the writer and bumps batchIndex so equality-deletes land in a
snapshot with a strictly higher sequence number than the data they target.

Report URL: https://github.com/apache/flink-cdc/actions/runs/25245005510

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