vinoyang created FLINK-14583:
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Summary: Remove progressLock from ExecutionGraph
Key: FLINK-14583
URL: https://issues.apache.org/jira/browse/FLINK-14583
Project: Flink
Issue Type: Sub-task
Components: Runtime / Coordination
Reporter: vinoyang
There is a lock object named {{progressLock}} which used to secure all access
to mutable fields, especially the tracking of progress within the job. Now, the
{{ExecutionGraph}} can only be accessed by a single thread at any time point.
IMO, we can remove this lock.
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