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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-170) NodeManager stop() gets called twice on shutdown
Date Wed, 28 Nov 2012 11:46:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13505381#comment-13505381
] 

Hadoop QA commented on YARN-170:
--------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12555066/YARN-170-1.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/167//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/167//console

This message is automatically generated.
                
> 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
>         Attachments: YARN-170-1.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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