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Hudson commented on YARN-3809: ------------------------------ FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #239 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/239/]) YARN-3809. Failed to launch new attempts because ApplicationMasterLauncher's threads all hang. Contributed by Jun Gong (jlowe: rev 2a20dd9b61ba3833460cbda0e8c3e8b6366fc3ab) * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/amlauncher/ApplicationMasterLauncher.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml * hadoop-yarn-project/CHANGES.txt > Failed to launch new attempts because ApplicationMasterLauncher's threads all > hang > ---------------------------------------------------------------------------------- > > Key: YARN-3809 > URL: https://issues.apache.org/jira/browse/YARN-3809 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager > Reporter: Jun Gong > Assignee: Jun Gong > Fix For: 2.7.1 > > Attachments: YARN-3809.01.patch, YARN-3809.02.patch, > YARN-3809.03.patch > > > ApplicationMasterLauncher create a thread pool whose size is 10 to deal with > AMLauncherEventType(LAUNCH and CLEANUP). > In our cluster, there was many NM with 10+ AM running on it, and one shut > down for some reason. After RM found the NM LOST, it cleaned up AMs running > on it. Then ApplicationMasterLauncher need handle these 10+ CLEANUP event. > ApplicationMasterLauncher's thread pool would be filled up, and they all hang > in the code containerMgrProxy.stopContainers(stopRequest) because NM was > down, the default RPC time out is 15 mins. It means that in 15 mins > ApplicationMasterLauncher could not handle new event such as LAUNCH, then new > attempts will fails to launch because of time out. -- This message was sent by Atlassian JIRA (v6.3.4#6332)