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https://issues.apache.org/jira/browse/YARN-3446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15081704#comment-15081704
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Hadoop QA commented on YARN-3446:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 4s {color} 
| {color:red} YARN-3446 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/12766024/YARN-3446.003.patch |
| JIRA Issue | YARN-3446 |
| Powered by | Apache Yetus 0.2.0-SNAPSHOT   http://yetus.apache.org |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/10147/console |


This message was automatically generated.



> FairScheduler HeadRoom calculation should exclude nodes in the blacklist.
> -------------------------------------------------------------------------
>
>                 Key: YARN-3446
>                 URL: https://issues.apache.org/jira/browse/YARN-3446
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>            Reporter: zhihai xu
>            Assignee: zhihai xu
>         Attachments: YARN-3446.000.patch, YARN-3446.001.patch, 
> YARN-3446.002.patch, YARN-3446.003.patch
>
>
> FairScheduler HeadRoom calculation should exclude nodes in the blacklist.
> MRAppMaster does not preempt the reducers because for Reducer preemption 
> calculation, headRoom is considering blacklisted nodes. This makes jobs to 
> hang forever(ResourceManager does not assign any new containers on 
> blacklisted nodes but availableResource AM get from RM includes blacklisted 
> nodes available resource).
> This issue is similar as YARN-1680 which is for Capacity Scheduler.



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