Wanqiang Ji created YARN-9958:
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Summary: Remove the invalid lock in ContainerExecutor
Key: YARN-9958
URL: https://issues.apache.org/jira/browse/YARN-9958
Project: Hadoop YARN
Issue Type: Improvement
Reporter: Wanqiang Ji
Assignee: Wanqiang Ji
ContainerExecutor has ReadLock and WriteLock. These used to call get/put method
of ConcurrentMap. Due to the ConcurrentMap providing thread safety and
atomicity guarantees, so we can remove the lock.
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