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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8327) distcpv2 and distcpv1 jars should not coexist
Date Wed, 02 May 2012 15:42:48 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266646#comment-13266646
] 

Hadoop QA commented on HADOOP-8327:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12525302/HADOOP-8327.patch
  against trunk revision .

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

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

    -1 javadoc.  The javadoc tool appears to have generated 2 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 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
warnings.

    +1 core tests.  The patch passed unit tests in hadoop-tools/hadoop-extras.

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

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/920//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HADOOP-Build/920//artifact/trunk/trunk/patchprocess/newPatchFindbugsWarningshadoop-extras.html
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/920//console

This message is automatically generated.
                
> distcpv2 and distcpv1 jars should not coexist
> ---------------------------------------------
>
>                 Key: HADOOP-8327
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8327
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.23.2
>            Reporter: Dave Thompson
>            Assignee: Dave Thompson
>         Attachments: HADOOP-8327-branch-0.23.2.patch, HADOOP-8327.patch
>
>
> Distcp v2 (hadoop-tools/hadoop-distcp/...)    and Distcp v1 (hadoop-tools/hadoop-extras/...)
are currently both built, and the resulting hadoop-distcp-x.jar and hadoop-extras-x.jar end
up in the same class path directory.   This causes some undeterministic problems, where v1
is launched when v2 is intended, or even v2 is launched, but may later fail on various nodes
because of mismatch with v1.
> According to
> http://docs.oracle.com/javase/6/docs/technotes/tools/windows/classpath.html ("Understanding
class path wildcards")
> "The order in which the JAR files in a directory are enumerated in the expanded class
path is not specified and may vary from platform to platform and even from moment to moment
on the same machine."
> Suggest distcpv1 be deprecated at this point, possibly by discontinuing build of distcpv1.

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