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https://issues.apache.org/jira/browse/YARN-4350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15046097#comment-15046097
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Naganarasimha G R commented on YARN-4350:
-----------------------------------------
Hi [~vrushalic],
Its not exactly fixed port, {{ServerSocketUtil.getPort}} tries to assign any
free port starting from the port specified. basically which port is free and
then assigns. This was introduced to avoid ephemeral port to take any port
instead use it from a valid range (and may be for few other reasons too.)
[~sjlee0],
I am not sure how to proceed with this jira, as its introduced by YARN-2859 but
actual cause is YARN-4372. YARN-4372 not sure we have any definitive solution.
as temporary fix shall i revert YARN-2859 solution and have my solution so
that we can proceed smoothly till YARN-4372 has some proper solution?
> 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
>
>
> 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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