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https://issues.apache.org/jira/browse/HDFS-7267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14360456#comment-14360456
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Tsz Wo Nicholas Sze commented on HDFS-7267:
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> ... DN0's DataXceiver simulatedFSDataset.getPinning() throws exception ...
It is a bug in SimulatedFSDataset. We should fix it.
> TestBalancer#testUnknownDatanode occasionally fails in trunk
> ------------------------------------------------------------
>
> Key: HDFS-7267
> URL: https://issues.apache.org/jira/browse/HDFS-7267
> Project: Hadoop HDFS
> Issue Type: Test
> Reporter: Ted Yu
> Assignee: Walter Su
> Priority: Minor
> Attachments: testUnknownDatanode-failed-log.html
>
>
> In build #1907 (https://builds.apache.org/job/Hadoop-Hdfs-trunk/1907/):
> {code}
> REGRESSION:
> org.apache.hadoop.hdfs.server.balancer.TestBalancer.testUnknownDatanode
> Error Message:
> expected:<0> but was:<-3>
> Stack Trace:
> java.lang.AssertionError: expected:<0> 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.junit.Assert.assertEquals(Assert.java:542)
> at
> org.apache.hadoop.hdfs.server.balancer.TestBalancer.testUnknownDatanode(TestBalancer.java:737)
> {code}
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