[jira] Commented: (HADOOP-4864) -libjars with multiple jars broken when client and cluster reside on different OSs

["Amareshwari Sriramadasu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771915#action_12771915 ] 

Amareshwari Sriramadasu commented on HADOOP-4864:
-------------------------------------------------

Can this be committed to branch-0.20? I verified that the same patch applies to branch 0.20 as well

> -libjars with multiple jars broken when client and cluster reside on different OSs
> ----------------------------------------------------------------------------------
>
>                 Key: HADOOP-4864
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4864
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: filecache
>    Affects Versions: 0.19.0
>         Environment: When your hadoop job spans OSs.
>            Reporter: Stuart White
>            Assignee: Amareshwari Sriramadasu
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: patch-4864-1.txt, patch-4864.txt, patch.txt
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> When submitting a hadoop job from Windows (Cygwin) to a Linux hadoop cluster (or vice versa), and when you specify multiple additional jar files via the -libjars flag, hadoop throws a ClassNotFoundException for any classes located in the additional jars specified via the -libjars flag.
> This is caused by the fact that hadoop uses system.getProperty("path.separator") as the delimiter in the list of jar files passed via -libjars.
> My suggested solution is to use a comma as the delimiter, rather than the path.separator.
> I realize comma is, perhaps, a poor choice for a delimiter because it is valid in filenames on both Windows and Linux, but the -libjars flag uses it as the delimiter when listing the additional required jars.  So, I figured if it's already being used as a delimiter, then it's reasonable to use it internally as well.

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