QuakeWang opened a new pull request, #8454:
URL: https://github.com/apache/paimon/pull/8454
### Purpose
Daft `PaimonDataSink.write()` previously always called `table_write.close()`
in a `finally` block. `close()` may flush and close writers, but it does not
remove uncommitted files. If a later micropartition failed after an earlier one
had produced data files, the failed write could leave orphan files.
This changes the worker write path to close only after `prepare_commit()`
succeeds, and to call `table_write.abort()` on exceptions before re-raising. It
also adds a regression test for a valid micropartition followed by a
schema-mismatched micropartition, verifying no data files remain.
### Tests
- `python -m pytest paimon-python/pypaimon/tests/daft/daft_sink_test.py`
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