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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1144) Hadoop should allow a configurable percentage of failed map tasks before declaring a job failed.
Date Thu, 03 May 2007 02:02:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12493264
] 

Hadoop QA commented on HADOOP-1144:
-----------------------------------

+1

http://issues.apache.org/jira/secure/attachment/12356676/HADOOP-1144_20070503_1.patch applied
and successfully tested against trunk revision r534624.

Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/108/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/108/console

> Hadoop should allow a configurable percentage of failed map tasks before declaring a
job failed.
> ------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1144
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1144
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: mapred
>    Affects Versions: 0.12.0
>            Reporter: Christian Kunz
>         Assigned To: Arun C Murthy
>             Fix For: 0.13.0
>
>         Attachments: HADOOP-1144_20070503_1.patch
>
>
> In our environment it can occur that some map tasks will fail repeatedly because of corrupt
input data, which sometimes is non-critical as long as the amount is limited. In this case
it is annoying that the whole Hadoop job fails and cannot be restarted till the corrupt data
are identified and eliminated from the input. It would be extremely helpful if the job configuration
would allow to indicate how many map tasks are allowed to fail.

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