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Rohith commented on YARN-2917: ------------------------------ The main problem is Thread-1 : CommonNodeLabelManager#handle() throw back exception to AsyncDispatcher. Intern, asyncDispatcher calls shutdown hook and waiting for shutdown hook to complete. Thread-2 : ShutodownHook stops RM gracefully.But gracefull stop wait for drainng events from AsyncDispatcher. > RM get hanged if fail to store NodeLabels into store. > ----------------------------------------------------- > > Key: YARN-2917 > URL: https://issues.apache.org/jira/browse/YARN-2917 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager > Reporter: Rohith > Assignee: Rohith > Priority: Critical > > I encoutered scenario where RM hanged while shutting down and keep on logging > {{2014-12-03 19:32:44,283 INFO org.apache.hadoop.yarn.event.AsyncDispatcher: > Waiting for AsyncDispatcher to drain.}} -- This message was sent by Atlassian JIRA (v6.3.4#6332)