Robert Bradshaw created BEAM-12646:
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Summary: Optimize global window grouping in Spark
Key: BEAM-12646
URL: https://issues.apache.org/jira/browse/BEAM-12646
Project: Beam
Issue Type: Bug
Components: runner-spark
Reporter: Robert Bradshaw
Per
https://lists.apache.org/x/thread.html/ra54c0120d1fc0a91e379f4248b1959c4ee06c3408e4f6c0e7650664f@%3Cuser.beam.apache.org%3E
the generic per-window code may be adding a lot of overhead.
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