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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-129) Simplify classpath construction for mini YARN tests
Date Tue, 25 Sep 2012 12:13:07 GMT

    [ https://issues.apache.org/jira/browse/YARN-129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13462683#comment-13462683

Hadoop QA commented on YARN-129:

-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 2 new or modified test files.

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

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

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

    -1 findbugs.  The patch appears to introduce 2 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 hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient

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

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/51//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-YARN-Build/51//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-mapreduce-client-common.html
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/51//console

This message is automatically generated.
> Simplify classpath construction for mini YARN tests
> ---------------------------------------------------
>                 Key: YARN-129
>                 URL: https://issues.apache.org/jira/browse/YARN-129
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: client
>            Reporter: Tom White
>            Assignee: Tom White
>             Fix For: 2.0.3-alpha
>         Attachments: YARN-129.patch
> The test classpath includes a special file called 'mrapp-generated-classpath' (or similar
in distributed shell) that is constructed at build time, and whose contents are a classpath
with all the dependencies needed to run the tests. When the classpath for a container (e.g.
the AM) is constructed the contents of mrapp-generated-classpath is read and added to the
classpath, and the file itself is then added to the classpath so that later when the AM constructs
a classpath for a task container it can propagate the test classpath correctly.
> This mechanism can be drastically simplified by propagating the system classpath of the
current JVM (read from the java.class.path property) to a launched JVM, but only if running
in the context of the mini YARN cluster. Any tests that use the mini YARN cluster will automatically
work with this change. Although any that explicitly deal with mrapp-generated-classpath can
be simplified.

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