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https://issues.apache.org/jira/browse/YARN-5031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15268642#comment-15268642
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Sunil G commented on YARN-5031:
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Container reservation is by far helps in many cases. In a heterogeneous
cluster, where different types applications were running, I am not very sure
about a configuration which disables reservation in scheduler level. As per the
use case, this scenario looks like more of application specific. Since queues
gives only a logical view of resources, and reservation happens on node, we
need to see how better output we can get for a queue level config.
A suggestion, I feel preemption can help here if in case queue is under served
and other queues requests were reserved on node. Thoughts?
> Add a conf to disable container reservation
> -------------------------------------------
>
> Key: YARN-5031
> URL: https://issues.apache.org/jira/browse/YARN-5031
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: sandflee
>
> in a cluster with long running services, container reservation may starve
> other small request services
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