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https://issues.apache.org/jira/browse/MAPREDUCE-6506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15541325#comment-15541325
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Karthik Kambatla commented on MAPREDUCE-6506:
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My bad, [~haibochen]. Just added some details around this.
> Make the reducer-preemption configs consistent in how they handle defaults
> --------------------------------------------------------------------------
>
> Key: MAPREDUCE-6506
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6506
> Project: Hadoop Map/Reduce
> Issue Type: Task
> Components: applicationmaster
> Affects Versions: 2.8.0
> Reporter: Karthik Kambatla
> Assignee: Haibo Chen
> Priority: Critical
>
> {{mapreduce.job.reducer.preempt.delay.sec}} and
> {{mapreduce.job.reducer.unconditional-preempt.delay.sec}} are two configs
> related to reducer preemption. These configs are not consistent in how they
> handle non-positive values. Also, the way to disable them is different.
> It would be nice to make them consistent somehow, and change the behavior of
> former if need be.
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