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Posted to yarn-issues@hadoop.apache.org by "Dillon Zhang (JIRA)" <ji...@apache.org> on 2018/07/05 07:24:00 UTC

[jira] [Created] (YARN-8495) Priority scheduling support in FairShare scheduler

Dillon Zhang created YARN-8495:
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             Summary: Priority scheduling support in FairShare scheduler
                 Key: YARN-8495
                 URL: https://issues.apache.org/jira/browse/YARN-8495
             Project: Hadoop YARN
          Issue Type: Wish
          Components: fairscheduler
            Reporter: Dillon Zhang


 In production environment, priority scheduling is of vital importance to us as we have lots of queues for different departments, then create applications but some of them are not so important as others, so we must guarantee the import ones to supply service.  

Based on the priority of the application, Fair Scheduler should be able to give preference to application while scheduling.

Comparator<FairShareComparator> applicationComparator can be changed as below. 
1. Check for Application priority. If priority is available, then return the highest priority job.
2. Otherwise continue with existing logic such as Fair Share comparison and App ID comparison and then TimeStamp comparison.



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