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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-673) the task execution environment should have a current working directory that is task specific
Date Wed, 06 Dec 2006 00:48:31 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-673?page=comments#action_12455829 ] 
            
Doug Cutting commented on HADOOP-673:
-------------------------------------

> Can the difference between getAbsoluteFile() and getCanonicalFile() be used reliably?

I think so.  The docs for getCanonicalFile() explicitly mention symbolic links, while getAbsoluteFile()
is merely supposed to resolve relative paths against CWD.

> What happens under cygwin?

Cygwin shouldn't impact this, since these are implemented by the JVM.


> the task execution environment should have a current working directory that is task specific
> --------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-673
>                 URL: http://issues.apache.org/jira/browse/HADOOP-673
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.7.2
>            Reporter: Owen O'Malley
>         Assigned To: Mahadev konar
>         Attachments: cwd.patch
>
>
> The tasks should be run in a work directory that is specific to a single task. In particular,
I'd suggest using the <local>/jobcache/<jobid>/<taskid> as the current working
directory.

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