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https://issues.apache.org/jira/browse/YARN-4890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15219441#comment-15219441
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Bibin A Chundatt commented on YARN-4890:
----------------------------------------
IIUC NodeLabelsUpdateSchedulerEvent.NODE_LABELS_UPDATE event is yet to be
processed. We are waiting for only node to be added not for completion of event
processing.
{noformat}
rm.registerNode("h4:1234", 10 * GB); // label = <empty>
waitSchedulerNodeJoined(rm, 4);
{noformat}
This could be the cause for random failures
> Unit test intermittent failure:
> TestNodeLabelContainerAllocation#testQueueUsedCapacitiesUpdate
> ----------------------------------------------------------------------------------------------
>
> Key: YARN-4890
> URL: https://issues.apache.org/jira/browse/YARN-4890
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Wangda Tan
>
> Message:
> {code}
> Tests run: 16, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 314.062 sec
> <<< FAILURE! - in
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestNodeLabelContainerAllocation
> testQueueUsedCapacitiesUpdate(org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestNodeLabelContainerAllocation)
> Time elapsed: 12.426 sec <<< FAILURE!
> java.lang.AssertionError: expected:<0.3> but was:<0.6>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:519)
> at org.junit.Assert.assertEquals(Assert.java:609)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestNodeLabelContainerAllocation.checkQueueUsedCapacity(TestNodeLabelContainerAllocation.java:1163)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestNodeLabelContainerAllocation.testQueueUsedCapacitiesUpdate(TestNodeLabelContainerAllocation.java:1382)
> {code}
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