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https://issues.apache.org/jira/browse/HADOOP-1050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy updated HADOOP-1050:
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Attachment: HADOOP-1050_20070419_2.patch
Here is a reasonably well tested patch which helps to distinguish between
*failed* tasks (i.e. bona-fide task 'error') and *killed* tasks (killed by the
framework for no fault of their own e.g. lost task-trackers). With this in
place it's then straight-forward to ensure that 'killed' tasks do not count
against the job, thus not penalizing it.
Other than that this patch contains some enchancements to
jobdetails.jsp/jobfailures.jsp to show the same information on the web-ui...
> Do not count lost tasktracker against the job
> ---------------------------------------------
>
> Key: HADOOP-1050
> URL: https://issues.apache.org/jira/browse/HADOOP-1050
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Reporter: Arun C Murthy
> Assigned To: Arun C Murthy
> Fix For: 0.13.0
>
> Attachments: HADOOP-1050_20070405_1.patch,
> HADOOP-1050_20070419_2.patch
>
>
> Equating a task failure to the one caused by a lost tasktracker is unfair on
> the job; in extreme cases it leads to a job being killed since a TIP could
> fail.
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