David Moravek created BEAM-5987:
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Summary: Spark SideInputReader performance
Key: BEAM-5987
URL: https://issues.apache.org/jira/browse/BEAM-5987
Project: Beam
Issue Type: Bug
Components: runner-spark
Affects Versions: 2.8.0
Reporter: David Moravek
Assignee: David Moravek
Fix For: 2.9.0
We did some profiling of a spark job and 90% of the application time was spent
on side input deserialization.
!image-2018-11-06-13-06-04-350.png!
For spark, an easy fix is to cache materialized side inputs per bundle. This
improved running time of the profiled job from 3 hours to 30 minutes.
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