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From "Kihwal Lee (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3259) ContainerLocalizer should get the proper java.library.path from LinuxContainerExecutor
Date Tue, 25 Oct 2011 13:16:32 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13135015#comment-13135015
] 

Kihwal Lee commented on MAPREDUCE-3259:
---------------------------------------

The javadoc warning is not caused by this patch.
{noformat} [WARNING] /home/jenkins/jenkins-slave/workspace/PreCommit-MAPREDUCE-Build/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/JobEndNotifier.java:112:
warning - @param argument "config" is not a parameter name.
{noformat}

The findbugs warnings don't seem to be new. Even the ones in the NM and the client app have
nothing to do with this patch.
                
> ContainerLocalizer should get the proper java.library.path from LinuxContainerExecutor
> --------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3259
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3259
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 0.23.0, 0.24.0
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>            Priority: Blocker
>             Fix For: 0.23.0, 0.24.0
>
>         Attachments: mapreduce-3259.patch
>
>
> As seen in MAPREDUCE-2915, java.library.path is not being passed when the LCE spawns
a JVM for ContainerLocalizer. 
> However, unlike branch-0.20-security, the task runtime in 0.23 is unaffected by this.
This is because tasks' run-time environment is specified in the launch script by client. Setting
LD_LIBRARY_PATH is the primary way of specifying the locations of required native library
in this case. The config property, mapreduce.admin.user.env is always set in the job environment
and the default value is to add the path to the hadoop native library to LD_LABRARY_PATH.
> For JVM's being launched by the hadoop system scripts, java.library.path is set.

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