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Date: Mon, 31 Mar 2008 12:00:26 -0700 (PDT)
From: "Runping Qi (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-3041) Within a task, the value
 ofJobConf.getOutputPath() method is modified
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    [ https://issues.apache.org/jira/browse/HADOOP-3041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12583798#action_12583798 ] 

Runping Qi commented on HADOOP-3041:
------------------------------------


I think it is better to removing the getOutputPath()  from the api and replace it with something else.
That way, the application can detect the problem at compile time.
Otherwise, the apps will misbehave without any warnings.


> Within a task, the value ofJobConf.getOutputPath() method is modified
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-3041
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3041
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.16.1
>         Environment: all
>            Reporter: Alejandro Abdelnur
>            Assignee: Amareshwari Sriramadasu
>            Priority: Blocker
>             Fix For: 0.17.0
>
>         Attachments: patch-3041-0.16.2.txt, patch-3041.txt, patch-3041.txt, patch-3041.txt, patch-3041.txt
>
>
> Until 0.16.0 the value of the getOutputPath() method, if queried within a task, pointed to the part file assigned to the task. 
> For example: /user/foo/myoutput/part_00000
> In 0.16.1, now it returns an internal hadoop for the task output temporary location.
> For the above example: /user/foo/myoutput/_temporary/part_00000
> This change breaks applications that use the getOutputPath() to compute other directories.
> IMO, this has always being broken, Hadoop should not change the values of properties injected by the client, instead it should use private properties or internal helper methods. 

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