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https://issues.apache.org/jira/browse/HDFS-2884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13484809#comment-13484809
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Zhuoluo (Clark) Yang commented on HDFS-2884:
--------------------------------------------
I think in 0.23.4. It still has this kind of problem.
> TestDecommission.testDecommissionFederation fails intermittently
> ----------------------------------------------------------------
>
> Key: HDFS-2884
> URL: https://issues.apache.org/jira/browse/HDFS-2884
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Affects Versions: 0.23.1
> Reporter: Eli Collins
>
> I saw the following assert fail on a jenkins job for branch HDFS-1623 but I
> don't think it's HA related.
>
> {noformat}
> java.lang.AssertionError: Number of Datanodes expected:<2> but was:<1>
> at org.junit.Assert.fail(Assert.java:91)
> at org.junit.Assert.failNotEquals(Assert.java:645)
> at org.junit.Assert.assertEquals(Assert.java:126)
> at org.junit.Assert.assertEquals(Assert.java:470)
> at
> org.apache.hadoop.hdfs.TestDecommission.validateCluster(TestDecommission.java:275)
> at
> org.apache.hadoop.hdfs.TestDecommission.startCluster(TestDecommission.java:288)
> at
> org.apache.hadoop.hdfs.TestDecommission.testDecommission(TestDecommission.java:384)
> at
> org.apache.hadoop.hdfs.TestDecommission.testDecommissionFederation(TestDecommission.java:344)
> {noformat}
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