hcarrot created YARN-9927:
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             Summary: RM multi-thread event processing mechanism
                 Key: YARN-9927
                 URL: https://issues.apache.org/jira/browse/YARN-9927
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: yarn
            Reporter: hcarrot
         Attachments: RM multi-thread event processing mechanism.pdf

Recently, we have observed serious event blocking in RM event dispatcher queue. 
After analysis of RM event monitoring data and RM event processing logic, we 
found that the proportion of RMNodeStatusEvent is less than other events, but 
the overall processing time of it is more than other events. Meanwhile, RM 
event processing is in a single-thread mode, and It results in the decrease of 
RM's performance. So we proposed a RM multi-thread event processing mechanism 
to improve RM performance. Is this mechanism feasible?



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