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https://issues.apache.org/jira/browse/MAPREDUCE-4292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290202#comment-13290202
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Jason Lowe commented on MAPREDUCE-4292:
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Nishan or Devaraj, have we been able to confirm that this issue only occurs
when mapred.max.map.failures.percent (or mapreduce.map.failures.maxpercent) is
set to a non-zero value? I'm curious if you have been able to reproduce job
hangs without that property being set.
> Job is hanging forever when some maps are failing always
> --------------------------------------------------------
>
> Key: MAPREDUCE-4292
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4292
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 2.0.0-alpha
> Reporter: Nishan Shetty
> Priority: Critical
> Attachments: syslog
>
>
> Set property "mapred.reduce.tasks" to some value greater than zero
> I have a job in which some maps are failing always.
> Observations:
> 1.Map phase is completing with 100%(with succeeded and failed maps).
> 2.Reduce phase is not progressing further after 32%.
> 3.After map phase is completed job is hanging forever.
> Expected that job should be failed after waiting for some time.
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