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Rohith commented on YARN-2917: ------------------------------ Kindly review the attached patch. I have manually verified problematic scenario as I mentioned in my [previous comment|https://issues.apache.org/jira/browse/YARN-2917?focusedCommentId=14233971&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14233971] by deploying in 1 node cluster. It is able to shutdown gracefully calling ShutdownHook. Not related to this jira : I observed that ResourceManager#rmDispatcher does not drain ,is it bug? > Potential deadlock in AsyncDispatcher when system.exit called in > AsyncDispatcher#dispatch and AsyscDispatcher#serviceStop from shutdown hook > -------------------------------------------------------------------------------------------------------------------------------------------- > > 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 > Attachments: 0001-YARN-2917.patch, 0002-YARN-2917.patch > > > 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)