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https://issues.apache.org/jira/browse/YARN-6670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16046813#comment-16046813
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Miklos Szegedi commented on YARN-6670:
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It applies to both CPU and memory. Let's say we have a guaranteed workload that
runs in batches. After each batch it releases some memory, waits for the
network for 0.5s and then continues with high memory and CPU usage. Without a
period we will allocate opportunistic containers, when this happens and preempt
them shortly after that. Instead of this, if the CPU and memory is below the
threshold for let's say more then 2 seconds, we would start allocating
opportunistic containers.
> Add separate NM overallocation thresholds for cpu and memory
> ------------------------------------------------------------
>
> Key: YARN-6670
> URL: https://issues.apache.org/jira/browse/YARN-6670
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager
> Affects Versions: 3.0.0-alpha3
> Reporter: Haibo Chen
> Assignee: Haibo Chen
> Attachments: YARN-6670-YARN-1011.00.patch,
> YARN-6670-YARN-1011.01.patch, YARN-6670-YARN-1011.02.patch,
> YARN-6670-YARN-1011.03.patch, YARN-6670-YARN-1011.04.patch,
> YARN-6670-YARN-1011.05.patch
>
>
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