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https://issues.apache.org/jira/browse/HDFS-6257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025495#comment-14025495
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Colin Patrick McCabe commented on HDFS-6257:
--------------------------------------------
The current check should always succeed if the code being tested is correct, so
it's not racy in that sense. We could wait for more DN cache reports, but
since the DNs are full they shouldn't change. Since we test the cache reports
elsewhere, I think it's probably fine as-is, what do you think?
> TestCacheDirectives#testExceedsCapacity fails occasionally in trunk
> -------------------------------------------------------------------
>
> Key: HDFS-6257
> URL: https://issues.apache.org/jira/browse/HDFS-6257
> Project: Hadoop HDFS
> Issue Type: Test
> Components: caching
> Affects Versions: 2.4.0
> Reporter: Ted Yu
> Assignee: Colin Patrick McCabe
> Priority: Minor
> Attachments: HDFS-6257.001.patch
>
>
> From https://builds.apache.org/job/Hadoop-Hdfs-trunk/1736/ :
> REGRESSION:
> org.apache.hadoop.hdfs.server.namenode.TestCacheDirectives.testExceedsCapacity
> {code}
> Error Message:
> Namenode should not send extra CACHE commands expected:<0> but was:<2>
> Stack Trace:
> java.lang.AssertionError: Namenode should not send extra CACHE commands
> expected:<0> but was:<2>
> at org.junit.Assert.fail(Assert.java:93)
> at org.junit.Assert.failNotEquals(Assert.java:647)
> at org.junit.Assert.assertEquals(Assert.java:128)
> at org.junit.Assert.assertEquals(Assert.java:472)
> at
> org.apache.hadoop.hdfs.server.namenode.TestCacheDirectives.testExceedsCapacity(TestCacheDirectives.java:1419)
> {code}
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