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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5333) Some recovered apps are put into default queue when RM HA
Date Wed, 03 Aug 2016 07:14:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15405478#comment-15405478
] 

Jian He commented on YARN-5333:
-------------------------------

Not related to this patch, I noticed that, if anything fails in the refresh call, it sends
the fatal event. I feel this a bit harsh. how about removing that ?

{code}
    } catch (Exception e) {
      LOG.error("RefreshAll failed so firing fatal event", e);
      rmContext
          .getDispatcher()
          .getEventHandler()
          .handle(
              new RMFatalEvent(RMFatalEventType.TRANSITION_TO_ACTIVE_FAILED,
                  e));
      throw new ServiceFailedException(
          "Error on refreshAll during transition to Active", e);
    }
{code}

> Some recovered apps are put into default queue when RM HA
> ---------------------------------------------------------
>
>                 Key: YARN-5333
>                 URL: https://issues.apache.org/jira/browse/YARN-5333
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jun Gong
>            Assignee: Jun Gong
>         Attachments: YARN-5333.01.patch, YARN-5333.02.patch, YARN-5333.03.patch, YARN-5333.04.patch,
YARN-5333.05.patch, YARN-5333.06.patch
>
>
> Enable RM HA and use FairScheduler, {{yarn.scheduler.fair.allow-undeclared-pools}} is
set to false, {{yarn.scheduler.fair.user-as-default-queue}} is set to false.
> Reproduce steps:
> 1. Start two RMs.
> 2. After RMs are running, change both RM's file {{etc/hadoop/fair-scheduler.xml}}, then
add some queues.
> 3. Submit some apps to the new added queues.
> 4. Stop the active RM, then the standby RM will transit to active and recover apps.
> However the new active RM will put recovered apps into default queue because it might
have not loaded the new {{fair-scheduler.xml}}. We need call {{initScheduler}} before start
active services or bring {{refreshAll()}} in front of {{rm.transitionToActive()}}. *It seems
it is also important for other scheduler*.



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