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https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15450959#comment-15450959
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Hadoop QA commented on YARN-3405:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s
{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 6s {color}
| {color:red} YARN-3405 does not apply to trunk. Rebase required? Wrong Branch?
See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12727554/YARN-3405.02.patch |
| JIRA Issue | YARN-3405 |
| Console output |
https://builds.apache.org/job/PreCommit-YARN-Build/12961/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> FairScheduler's preemption cannot happen between sibling in some case
> ---------------------------------------------------------------------
>
> Key: YARN-3405
> URL: https://issues.apache.org/jira/browse/YARN-3405
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: fairscheduler
> Affects Versions: 2.7.0
> Reporter: Peng Zhang
> Assignee: Peng Zhang
> Priority: Critical
> Labels: fs-preemption-bugs
> Attachments: YARN-3405.01.patch, YARN-3405.02.patch
>
>
> Queue hierarchy described as below:
> {noformat}
> root
> / \
> queue-1 queue-2
> / \
> queue-1-1 queue-1-2
> {noformat}
> Assume cluster resource is 100
> # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare.
> # When queue-1-2 is active, and it cause some new preemption request for
> fairshare 25.
> # When preemption from root, it has possibility to find preemption candidate
> is queue-2. If so preemptContainerPreCheck for queue-2 return false because
> it's equal to its fairshare.
> # Finally queue-1-2 will be waiting for resource release form queue-1-1
> itself.
> What I expect here is that queue-1-2 preempt from queue-1-1.
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