Udi Meiri created BEAM-4062:
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Summary: Performance regression in FileBasedSink
Key: BEAM-4062
URL: https://issues.apache.org/jira/browse/BEAM-4062
Project: Beam
Issue Type: Bug
Components: sdk-py-core
Reporter: Udi Meiri
Assignee: Ahmet Altay
[https://github.com/apache/beam/pull/4648] has added:
* 3 or more stat() calls per output file (in pre_finalize and finalize_writes)
* serial unbatched delete()s (in pre_finalize)
Solution will be to list files in a batch operation (match()), and to delete()
in batch mode, or use multiple threads if that's not possible.
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