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From "Christian Kunz (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1612) listing of an output directory shortly after job completion fails
Date Fri, 05 Oct 2007 21:31:51 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12532781
] 

Christian Kunz commented on HADOOP-1612:
----------------------------------------

Just wanted to mention that I still see that listing a job output directory using libhdfs
after successful job completion sometimes fails for up to 6 secs.

> listing of an output directory shortly after job completion fails
> -----------------------------------------------------------------
>
>                 Key: HADOOP-1612
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1612
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.14.0
>            Reporter: Christian Kunz
>            Assignee: Arun C Murthy
>             Fix For: 0.15.0
>
>
> Sometimes, after a job finishes, and another application wants to rename dfs files created
by that job, listing of the output directory containing the newly created files fails. File
creation and directory listing is done via libhdfs, but it is unlikely that this makes any
difference, therefore, I add this to the mapred component.
> It might be a race condition: does the job complete before the files in the output directory
are promoted?

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