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https://issues.apache.org/jira/browse/YARN-5333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16037054#comment-16037054
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Eric Badger commented on YARN-5333:
-----------------------------------
[~sunilg], backporting this to 2.8 broke a unit test. It would also be nice if
you could comment on the JIRA when you backport so that it's obvious that the
backport was at a different time than the original commit.
{noformat}
testTransitionedToActiveRefreshFail(org.apache.hadoop.yarn.server.resourcemanager.TestRMHA)
Time elapsed: 2.396 sec <<< FAILURE!
java.lang.AssertionError: null
at org.junit.Assert.fail(Assert.java:86)
at org.junit.Assert.assertTrue(Assert.java:41)
at org.junit.Assert.assertTrue(Assert.java:52)
at
org.apache.hadoop.yarn.server.resourcemanager.TestRMHA.testTransitionedToActiveRefreshFail(TestRMHA.java:623)
{noformat}
> 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
> Labels: release-blocker
> Fix For: 2.9.0, 2.7.4, 3.0.0-alpha1, 2.8.2
>
> 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, YARN-5333.07.patch, YARN-5333.08.patch,
> YARN-5333.09.patch, YARN-5333.10.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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