Qi Zhu created YARN-10696:
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             Summary: Add RMNodeEvent to single async dispatcher before 
YARN-9927.
                 Key: YARN-10696
                 URL: https://issues.apache.org/jira/browse/YARN-10696
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Qi Zhu
            Assignee: Qi Zhu


According to YARN-9927 analysis.

The RMNodeStatusEvent dominates 90% time consumption of RM event scheduler.

We'd better to add RMNodeEvent to a separate async Event handler similar to 
YARN-9618.



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