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From "Ivan Mitic (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8409) Address Hadoop path related issues on Windows
Date Wed, 06 Jun 2012 22:21:23 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290503#comment-13290503
] 

Ivan Mitic commented on HADOOP-8409:
------------------------------------

Thanks Daryn, that makes sense. We finally decided not to further extend the support for backslash.
This means that input paths to GenericOptionsParser (files/archives/libjars) must be valid
URIs on Windows! 

I will repurpose this Jira to fix test failures in TestGenericOptionsParser and TestCommandLineJobSubmission
in line with this decision.

Also, I have created two new Jiras based on the original patch attached here, as these issue
can generally stand on their own:
 - [HADOOP-8487|https://issues.apache.org/jira/browse/HADOOP-8409]
 - [MAPREDUCE-4321|https://issues.apache.org/jira/browse/MAPREDUCE-4321]

Separately, we are still discussing possible solutions for [HADOOP-8139|https://issues.apache.org/jira/browse/HADOOP-8139].
My goal was to break down the original problem into smaller isolated pieces so that we can
make incremental progress in parallel.
                
> Address Hadoop path related issues on Windows
> ---------------------------------------------
>
>                 Key: HADOOP-8409
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8409
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs, test, util
>    Affects Versions: 1.0.0
>            Reporter: Ivan Mitic
>            Assignee: Ivan Mitic
>         Attachments: HADOOP-8409-branch-1-win.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> There are multiple places in prod and test code where Windows paths are not handled properly.
From a high level this could be summarized with:
> 1. Windows paths are not necessarily valid DFS paths (while Unix paths are)
> 2. Windows paths are not necessarily valid URIs (while Unix paths are)
> #1 causes a number of tests to fail because they implicitly assume that local paths are
valid DFS paths (by extracting the DFS test path from for example "test.build.data" property)
> #2 causes issues when URIs are directly created on path strings passed in by the user

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