Jun Gong created YARN-3057:
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             Summary: Need update apps' runnability when reloading allocation 
files for FairScheduler
                 Key: YARN-3057
                 URL: https://issues.apache.org/jira/browse/YARN-3057
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager
            Reporter: Jun Gong
            Assignee: Jun Gong


If we submit a app and the number of running app in its corresponding leaf 
queue has reached its max limit, the app will be put into 'nonRunnableApps'. 
And its runnabiltiy will only be updated when removing a 
appattempt(FairScheduler will call `updateRunnabilityOnAppRemoval` at that 
time).

Suppose there are only service apps running, they will not finish, so the 
submitted app will not be scheduled even we change leaf queue's max limit. I 
think we need update apps' runnability when reloading allocation files for 
FairScheduler.



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