Wangda Tan created YARN-3091:
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Summary: [Umbrella] Improve locks of RM scheduler
Key: YARN-3091
URL: https://issues.apache.org/jira/browse/YARN-3091
Project: Hadoop YARN
Issue Type: Improvement
Components: capacityscheduler, fairscheduler, resourcemanager,
scheduler
Reporter: Wangda Tan
In existing YARN RM scheduler, there're some issues of using locks. For example:
- Many unnecessary synchronized locks, we have seen several cases recently that
too frequent access of scheduler makes scheduler hang. Which could be addressed
by using read/write lock. Components include scheduler, CS queues, apps
- Some fields not properly locked (Like clusterResource)
We can address them together in this ticket.
(More details see comments below)
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