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https://issues.apache.org/jira/browse/HADOOP-8327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270468#comment-13270468
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Hudson commented on HADOOP-8327:
--------------------------------
Integrated in Hadoop-Mapreduce-trunk #1073 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1073/])
HADOOP-8327. distcpv2 and distcpv1 jars should not coexist (Dave Thompson
via bobby) (Revision 1335075)
Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1335075
Files :
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-tools/hadoop-extras/src/main/java/org/apache/hadoop/tools/DistCp.java
*
/hadoop/common/trunk/hadoop-tools/hadoop-extras/src/main/java/org/apache/hadoop/tools/DistCpV1.java
*
/hadoop/common/trunk/hadoop-tools/hadoop-extras/src/main/java/org/apache/hadoop/tools/Logalyzer.java
*
/hadoop/common/trunk/hadoop-tools/hadoop-extras/src/test/java/org/apache/hadoop/tools/TestCopyFiles.java
> 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
> Fix For: 0.23.3, 2.0.0, 3.0.0
>
> Attachments: HADOOP-8327-branch-0.23.2.patch, HADOOP-8327.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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