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https://issues.apache.org/jira/browse/YARN-9520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16830398#comment-16830398
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Sudhir Babu Pothineni commented on YARN-9520:
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Thanks [~yufeigu] didn't thought about FIFO policy, will try it. could you
please clarify if following with FIFO preemption are true?
* inter-queue preemption will not happen among the applications of inside the
queue.
* FIFO ordering policy the newer applications will preempted first if the
priority is same or not set. In other words, the older applications will
considered for preemption only after the newer applications are preempted.
* multiple applications of a queue will run if resources are available. lets
say there are resources for 200 containers, 2 applications of 100 containers
will run. after 50 containers of each finished does the 3rd containers will get
allocated? or it will wait for first 2 applications will finish?
> fair scheduler: inter-queue-preemption.enabled,
> intra-queue-preemption.enabled options
> --------------------------------------------------------------------------------------
>
> Key: YARN-9520
> URL: https://issues.apache.org/jira/browse/YARN-9520
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Reporter: Sudhir Babu Pothineni
> Priority: Major
>
> Its good to have inter-queue-preemption-enabled,
> intra-queue-preemption-enabled options for fair scheduler, i have a use case
> where we need inter-queue-preemption-enabled=false
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