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https://issues.apache.org/jira/browse/MAPREDUCE-2876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095102#comment-13095102
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Sharad Agarwal commented on MAPREDUCE-2876:
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@Robert As you have mentioned, the modificationFrequency and N is quite high in
most of our usecases. So based on computational complexities and also the code
complexity, went for the simple polling model.
> ContainerAllocationExpirer appears to use the incorrect configs
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-2876
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2876
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Fix For: 0.23.0
>
>
> ContainerAllocationExpirer sets the expiration interval to be
> RMConfig.CONTAINER_LIVELINESS_MONITORING_INTERVAL but uses
> AMLIVELINESS_MONITORING_INTERVAL as the interval. This is very different
> from what AMLivelinessMonitor does.
> There should be two configs RMConfig.CONTAINER_LIVELINESS_MONITORING_INTERVAL
> for the monitoring interval and RMConfig.CONTAINER_EXPIRY_INTERVAL for the
> expiry.
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