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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4479) Retrospect app-priority in pendingOrderingPolicy during recovering applications
Date Wed, 30 Dec 2015 07:09:49 GMT

    [ https://issues.apache.org/jira/browse/YARN-4479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15074705#comment-15074705
] 

Rohith Sharma K S commented on YARN-4479:
-----------------------------------------

bq. For finished attempt, I think we do not need to re-add into scheduler, so this whole code
could be removed.
While recovering application and attempts, If the last attempt is FAILED then from scheduler
transfer state from previous attempt. So, whenever there is failed attempt, attempt has to
be added to scheduler for obtaining the state. Reference test case {{TestRMRestart#testRMRestartAppRunningAMFailed}}

> Retrospect app-priority in pendingOrderingPolicy during recovering applications
> -------------------------------------------------------------------------------
>
>                 Key: YARN-4479
>                 URL: https://issues.apache.org/jira/browse/YARN-4479
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api, resourcemanager
>            Reporter: Rohith Sharma K S
>            Assignee: Rohith Sharma K S
>         Attachments: 0001-YARN-4479.patch, 0002-YARN-4479.patch
>
>
> Currently, same ordering policy is used for pending applications and active applications.
When priority is configured for an applications, during recovery high priority application
get activated first. It is possible that low priority job was submitted and running state.

> This causes low priority job in starvation after recovery



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