ChenFolin created YARN-4980:
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Summary: SchedulerEventDispatcher should not process by only a
single EventProcessor thread
Key: YARN-4980
URL: https://issues.apache.org/jira/browse/YARN-4980
Project: Hadoop YARN
Issue Type: Bug
Components: resourcemanager
Affects Versions: 2.6.4, 2.5.0
Environment: 1 resourcemanager
500 nodemanager
nodemanager heartbeat interval is 3 secs.
Reporter: ChenFolin
I think only a single EventProcessor thread in SchedulerEventDispatcher to
process event is unreasonable.
I often see "Size of scheduler event-queue is 1000(2000..)..." at the
resourcemanager log.
Now I have 500 nodemanager , event process is slowly. If I add another 200
nodemanagers , the situation will badly.
... so,can node events(node add/delete/update...) processed by multi threads?
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