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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3505) yarn APPLICATION_CLASSPATH needs to be overridable
Date Tue, 24 Jan 2012 04:55:40 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13191887#comment-13191887

Hadoop QA commented on MAPREDUCE-3505:

+1 overall.  Here are the results of testing the latest attachment 
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

    +1 core tests.  The patch passed unit tests in .

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1656//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1656//console

This message is automatically generated.
> yarn APPLICATION_CLASSPATH needs to be overridable
> --------------------------------------------------
>                 Key: MAPREDUCE-3505
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3505
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Bruno Mahé
>            Assignee: Ahmed Radwan
>              Labels: bigtop
>             Fix For: 0.23.1
>         Attachments: MAPREDUCE-3505.patch, MAPREDUCE-3505_rev2.patch
> Right now MRApps sets the classpath to just being mrapp-generated-classpath, its content
and a hardcoded list of directories.
> If I understand correctly mrapp-generated-classpath is only there for testing and may
change or disappear at any time
> The list of hardcoded directories is defined in hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/ApplicationConstants.java
at line 92.
> For convenience, here is its current content:
> {noformat}
>   /**
>    * Classpath for typical applications.
>    */
>   public static final String[] APPLICATION_CLASSPATH =
>       new String[] {
>         "$HADOOP_CONF_DIR",
>         "$HADOOP_COMMON_HOME/share/hadoop/common/*",
>         "$HADOOP_COMMON_HOME/share/hadoop/common/lib/*",
>         "$HADOOP_HDFS_HOME/share/hadoop/hdfs/*",
>         "$HADOOP_HDFS_HOME/share/hadoop/hdfs/lib/*",
>         "$YARN_HOME/modules/*",
>         "$YARN_HOME/lib/*"
>       };
> {noformat}
> Not all deployment scenarii fit in this layout and therefore we need a standardized way
to customize this class path.

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