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https://issues.apache.org/jira/browse/YARN-3809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14601051#comment-14601051
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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.
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