[
https://issues.apache.org/jira/browse/YARN-1854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13942608#comment-13942608
]
Vinod Kumar Vavilapalli commented on YARN-1854:
-----------------------------------------------
bq. java.lang.AssertionError: Incorrect value for metric availableMB
expected:<2048> but was:<4096>
This error seems entirely not possible from what I see in the code.
The solution in the patch will work, but there are cases where we are
inspecting decrease of a counter too. And there, we will need to wait till
scheduler seems the change.
bq. For races like this, where we might be trying to verify something too soon,
it should be okay to verify after waiting for a little bit.
I like this solution of Karthik's better than what is done in the patch. Shall
we do that? Basically verifyClusterMetrics() util itself loops till it can find
all the metrics same as what is expected or till a timeout happens.
> TestRMHA#testStartAndTransitions Fails
> --------------------------------------
>
> Key: YARN-1854
> URL: https://issues.apache.org/jira/browse/YARN-1854
> Project: Hadoop YARN
> Issue Type: Test
> Affects Versions: 2.4.0
> Reporter: Mit Desai
> Assignee: Rohith
> Priority: Blocker
> Attachments: YARN-1854.patch
>
>
> {noformat}
> testStartAndTransitions(org.apache.hadoop.yarn.server.resourcemanager.TestRMHA)
> Time elapsed: 5.883 sec <<< FAILURE!
> java.lang.AssertionError: Incorrect value for metric availableMB
> expected:<2048> but was:<4096>
> at org.junit.Assert.fail(Assert.java:93)
> at org.junit.Assert.failNotEquals(Assert.java:647)
> at org.junit.Assert.assertEquals(Assert.java:128)
> at org.junit.Assert.assertEquals(Assert.java:472)
> at
> org.apache.hadoop.yarn.server.resourcemanager.TestRMHA.assertMetric(TestRMHA.java:396)
> at
> org.apache.hadoop.yarn.server.resourcemanager.TestRMHA.verifyClusterMetrics(TestRMHA.java:387)
> at
> org.apache.hadoop.yarn.server.resourcemanager.TestRMHA.testStartAndTransitions(TestRMHA.java:160)
> Results :
> Failed tests:
>
> TestRMHA.testStartAndTransitions:160->verifyClusterMetrics:387->assertMetric:396
> Incorrect value for metric availableMB expected:<2048> but was:<4096>
> {noformat}
--
This message was sent by Atlassian JIRA
(v6.2#6252)
