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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-170) NodeManager stop() gets called twice on shutdown
Date Tue, 08 Jan 2013 13:14:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13546866#comment-13546866
] 

Hudson commented on YARN-170:
-----------------------------

Integrated in Hadoop-Hdfs-trunk #1279 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1279/])
    YARN-170. Change NodeManager stop to be reentrant. Contributed by Sandy Ryza. (Revision
1429796)

     Result = FAILURE
vinodkv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1429796
Files : 
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeManager.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeManagerEvent.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeManagerEventType.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeStatusUpdaterImpl.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/TestNodeStatusUpdater.java

                
> NodeManager stop() gets called twice on shutdown
> ------------------------------------------------
>
>                 Key: YARN-170
>                 URL: https://issues.apache.org/jira/browse/YARN-170
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.0.2-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>             Fix For: 2.0.3-alpha
>
>         Attachments: YARN-170-1.patch, YARN-170-20130107.txt, YARN-170-2.patch, YARN-170-3.patch,
YARN-170.patch
>
>
> The stop method in the NodeManager gets called twice when the NodeManager is shut down
via the shutdown hook.
> The first is the stop that gets called directly by the shutdown hook.  The second occurs
when the NodeStatusUpdaterImpl is stopped.  The NodeManager responds to the NodeStatusUpdaterImpl
stop stateChanged event by stopping itself.  This is so that NodeStatusUpdaterImpl can notify
the NodeManager to stop, by stopping itself in response to a request from the ResourceManager
> This could be avoided if the NodeStatusUpdaterImpl were to stop the NodeManager by calling
its stop method directly.

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