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https://issues.apache.org/jira/browse/YARN-4350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15062342#comment-15062342
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Naganarasimha G R commented on YARN-4350:
-----------------------------------------
Hi [~sjlee0] & [~varun_saxena],
I tried to check and reproduce it many times i was not able to reproduce it and
from the logs was not able to figure out much, but the failures are not related
to the issues which we targeted to fix as part of this jira and felt from the
testcase logs there might have been some network jitter trying to change the
title and reapply the patch again !
> TestDistributedShell fails
> --------------------------
>
> Key: YARN-4350
> URL: https://issues.apache.org/jira/browse/YARN-4350
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: YARN-2928
> Reporter: Sangjin Lee
> Assignee: Naganarasimha G R
> Attachments: YARN-4350-feature-YARN-2928.001.patch,
> YARN-4350-feature-YARN-2928.002.patch, YARN-4350-feature-YARN-2928.003.patch
>
>
> Currently TestDistributedShell does not pass on the feature-YARN-2928 branch.
> There seem to be 2 distinct issues.
> (1) testDSShellWithoutDomainV2* tests fail sporadically
> These test fail more often than not if tested by themselves:
> {noformat}
> testDSShellWithoutDomainV2DefaultFlow(org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell)
> Time elapsed: 30.998 sec <<< FAILURE!
> java.lang.AssertionError: Application created event should be published
> atleast once expected:<1> but was:<0>
> 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:555)
> at
> org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell.checkTimelineV2(TestDistributedShell.java:451)
> at
> org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell.testDSShell(TestDistributedShell.java:326)
> at
> org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell.testDSShellWithoutDomainV2DefaultFlow(TestDistributedShell.java:207)
> {noformat}
> They start happening after YARN-4129. I suspect this might have to do with
> some timing issue.
> (2) the whole test times out
> If you run the whole TestDistributedShell test, it times out without fail.
> This may or may not have to do with the port change introduced by YARN-2859
> (just a hunch).
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