Xuan Gong created YARN-1574:
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Summary: When RM transit from Active to Standby, the same
eventDispatcher should not be registered more than once
Key: YARN-1574
URL: https://issues.apache.org/jira/browse/YARN-1574
Project: Hadoop YARN
Issue Type: Sub-task
Reporter: Xuan Gong
Assignee: Xuan Gong
Priority: Blocker
Currently, we move rmDispatcher out of ActiveService. But we still register the
Event dispatcher, such as schedulerDispatcher, RMAppEventDispatcher when we
initiate the ActiveService.
Almost every time when we transit RM from Active to Standby, we need to
initiate the ActiveService. That means we will register the same event
Dispatcher which will cause the same event will be handled several times.
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