[jira] [Created] (YARN-10449) Flexing doesn't consider containers which were stopped

["Bilwa S T (Jira)" <ji...@apache.org>]

Bilwa S T created YARN-10449:
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             Summary: Flexing doesn't consider containers which were stopped
                 Key: YARN-10449
                 URL: https://issues.apache.org/jira/browse/YARN-10449
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Bilwa S T


we have use case where if worker is idle for some period of time then user would want to shutdown the worker to release resource and request more workers when load is more. 

In case of ON_FAILURE retry policy if user gracefully shutdown worker its exit status will be 0 so container wont be relaunched. In this case 
if user try to flex up then it currently doesn't consider stopped containers which is not correct. 
i could think of two possible solutions:
1. Consider deducting succeeded containers from Number Of Containers and then clear succeeded component if flex up/down is done.
2. Consider updating number of containers when stopped
 



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