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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9466) TestShortCircuitCache#testDataXceiverCleansUpSlotsOnFailure is flaky
Date Thu, 14 Jan 2016 00:29:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15097350#comment-15097350
] 

Colin Patrick McCabe commented on HDFS-9466:
--------------------------------------------

Hmm.  Can you be clearer on what the race condition is here?

> TestShortCircuitCache#testDataXceiverCleansUpSlotsOnFailure is flaky
> --------------------------------------------------------------------
>
>                 Key: HDFS-9466
>                 URL: https://issues.apache.org/jira/browse/HDFS-9466
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: fs, hdfs-client
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>         Attachments: HDFS-9466.001.patch, HDFS-9466.002.patch
>
>
> This test is flaky and fails quite frequently in trunk.
> Error Message
> expected:<1> but was:<2>
> Stacktrace
> {noformat}
> java.lang.AssertionError: expected:<1> but was:<2>
> 	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.shortcircuit.TestShortCircuitCache$17.accept(TestShortCircuitCache.java:636)
> 	at org.apache.hadoop.hdfs.server.datanode.ShortCircuitRegistry.visit(ShortCircuitRegistry.java:395)
> 	at org.apache.hadoop.hdfs.shortcircuit.TestShortCircuitCache.checkNumberOfSegmentsAndSlots(TestShortCircuitCache.java:631)
> 	at org.apache.hadoop.hdfs.shortcircuit.TestShortCircuitCache.testDataXceiverCleansUpSlotsOnFailure(TestShortCircuitCache.java:684)
> {noformat}
> Thanks to [~xiaochen] for identifying the issue.



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