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https://issues.apache.org/jira/browse/YARN-4989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15253667#comment-15253667
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Rohith Sharma K S commented on YARN-4989:
-----------------------------------------
In the test {{TestWorkPreservingRMRestart#testCapacitySchedulerRecovery}},
after RM is restarted, method {{waitForNumContainersToRecover}} has been called
for submitted apps. There are 2 apps submitted, but waiting is only for 2 apps
i.e am1_1 and am1_2. There is another AM *am2* which need to wait for container
recovery. Code is there to wait but it is waiting for am1_2 only.
{code}
// Wait for RM to settle down on recovering containers;
waitForNumContainersToRecover(2, rm2, am1_1.getApplicationAttemptId());
waitForNumContainersToRecover(2, rm2, am1_2.getApplicationAttemptId());
waitForNumContainersToRecover(2, rm2, am1_2.getApplicationAttemptId());
{code}
In third waitForNumContainersToRecover, instead of am1_2, variable am2 should
solve this randomness
> TestWorkPreservingRMRestart#testCapacitySchedulerRecovery fails
> intermittently
> -------------------------------------------------------------------------------
>
> Key: YARN-4989
> URL: https://issues.apache.org/jira/browse/YARN-4989
> Project: Hadoop YARN
> Issue Type: Bug
> Components: test
> Reporter: Rohith Sharma K S
>
> Sometimes TestWorkPreservingRMRestart#testCapacitySchedulerRecovery fails
> randomly.
> {noformat}
> java.lang.AssertionError: expected:<<memory:2048, vCores:2>> but
> was:<<memory:1024, vCores:1>>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:144)
> at
> org.apache.hadoop.yarn.server.resourcemanager.TestWorkPreservingRMRestart.checkCSLeafQueue(TestWorkPreservingRMRestart.java:289)
> at
> org.apache.hadoop.yarn.server.resourcemanager.TestWorkPreservingRMRestart.testCapacitySchedulerRecovery(TestWorkPreservingRMRestart.java:501)
> {noformat}
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