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https://issues.apache.org/jira/browse/YARN-5295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15358899#comment-15358899
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Prabhu Joseph commented on YARN-5295:
-------------------------------------

Hi [~sunilg], In addition, we also need to include below code snippet in 
UserGroupMappingPlacementRule#getMappedQueue before returning the mapped queue, 
which will return a valid queue which is a existent leaf queue. 

{code}
     for (QueueMapping mapping : mappings) {
         if (queue == null || !(queue instanceof LeafQueue)) {
                  continue;
         }
         return queue;
    }
{code}

> YARN queue-mappings to check Queue is present before submitting job
> -------------------------------------------------------------------
>
>                 Key: YARN-5295
>                 URL: https://issues.apache.org/jira/browse/YARN-5295
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacity scheduler
>    Affects Versions: 2.7.2
>            Reporter: Prabhu Joseph
>
> In yarn Queue-Mappings, Yarn should check if the queue is present before 
> submitting the job. If not present it should go to next mapping available.
> For example if we have
> yarn.scheduler.capacity.queue-mappings=u:%user:%user,g:edw:platform
> and I submit job with user "test" and if there is no "test" queue then it 
> should check the second mapping (g:edw:platform) in the list and if test is 
> part of edw group it should submit job in platform queue.
> Below Sanity checks has to be done for the mapped queue in the list and if it 
> fails then the the next queue mapping has to be chosen, when there is no 
> queue mapping passing the sanity check, only then the application has to be 
> Rejected.
> 1. is queue present
> 2. is queue not a leaf queue
> 3. is user either have ACL Submit_Applications or Administer_Queue of the 
> queue.



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