Josh Rosen created SPARK-11307:
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Summary: Reduce memory consumption of OutputCommitCoordinator
bookkeeping structures
Key: SPARK-11307
URL: https://issues.apache.org/jira/browse/SPARK-11307
Project: Spark
Issue Type: Bug
Components: Scheduler
Reporter: Josh Rosen
Assignee: Josh Rosen
OutputCommitCoordinator uses a map in a place where an array would suffice,
increasing its memory consumption for result stages with millions of tasks.
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