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From "Sameer Paranjpye (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3041) Within a task, the value ofJobConf.getOutputPath() method is modified
Date Wed, 19 Mar 2008 17:14:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12580452#action_12580452
] 

Sameer Paranjpye commented on HADOOP-3041:
------------------------------------------

Silently changing public API semantics is bad, looks like we've done that here. How about
we:
- Deprecate getOutputPath() and replace it with getCurrentOutputPath() and getFinalOutputPath()
- Have getOutputPath() return the same thing as getCurrentOutputPath() because that breaks
the least amount of code


> 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: 0.16.2
>
>
> 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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