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https://issues.apache.org/jira/browse/YARN-4686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15143158#comment-15143158
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Karthik Kambatla commented on YARN-4686:
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It makes sense to ensure the mini-cluster start doesn't return until the
cluster has actually fully started. I am comfortable with transitioning one of
the RMs to active and updating the HA tests accordingly.
I don't expect tests outside of Yarn/MR to depend on HA nature of the cluster.
Also, MiniYarnCluster is not marked Public-Stable yet. Should we just go ahead
and mark the constructor that allows multiple RMs Private?
> MiniYARNCluster.start() returns before cluster is completely started
> --------------------------------------------------------------------
>
> Key: YARN-4686
> URL: https://issues.apache.org/jira/browse/YARN-4686
> Project: Hadoop YARN
> Issue Type: Bug
> Components: test
> Reporter: Rohith Sharma K S
> Assignee: Eric Badger
> Attachments: MAPREDUCE-6507.001.patch
>
>
> TestRMNMInfo fails intermittently. Below is trace for the failure
> {noformat}
> testRMNMInfo(org.apache.hadoop.mapreduce.v2.TestRMNMInfo) Time elapsed: 0.28
> sec <<< FAILURE!
> java.lang.AssertionError: Unexpected number of live nodes: expected:<4> but
> was:<3>
> 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.mapreduce.v2.TestRMNMInfo.testRMNMInfo(TestRMNMInfo.java:111)
> {noformat}
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