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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4654) remove temporary output directory of failed tasks
Date Tue, 03 Feb 2009 19:29:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670073#action_12670073

dhruba borthakur commented on HADOOP-4654:

Hi Amareshwari, do you think that this patch is applicable to the hadoop 0.17 branch as well?
(This is just a question and not a request to apply it to any branch).

> remove temporary output directory of failed tasks
> -------------------------------------------------
>                 Key: HADOOP-4654
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4654
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.17.2, 0.18.1
>            Reporter: Christian Kunz
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.18.3
>         Attachments: patch-4654-0.18.txt, patch-4654-1-0.18.txt
> When dfs is getting full (80+% of reserved space), the rate of write failures increases,
such that more map-reduce tasks can fail. By not cleaning up the temporary output directory
of tasks the situation worsens over the lifetime of a job, increasing the probability of the
whole job failing.

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