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https://issues.apache.org/jira/browse/HDFS-6126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16512770#comment-16512770
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Íñigo Goiri commented on HDFS-6126:
-----------------------------------
We are seeing this error once in a while.
For example
[here|https://builds.apache.org/job/PreCommit-HDFS-Build/24436/testReport/org.apache.hadoop.hdfs.server.namenode.metrics/TestNameNodeMetrics/testCorruptBlock/].
There are many JIRAs that have targetted this: HDFS-2434, HDFS-3812, HDFS-4338,
HDFS-4355.
However, this is still present.
[~zuzhan], can you take a look?
> TestnameNodeMetrics#testCorruptBlock fails intermittently
> ---------------------------------------------------------
>
> Key: HDFS-6126
> URL: https://issues.apache.org/jira/browse/HDFS-6126
> Project: Hadoop HDFS
> Issue Type: Test
> Affects Versions: 2.4.0
> Reporter: Mit Desai
> Priority: Major
>
> I get the following error
> {noformat}
> testCorruptBlock(org.apache.hadoop.hdfs.server.namenode.metrics.TestNameNodeMetrics)
> Time elapsed: 5.556 sec <<< FAILURE!
> java.lang.AssertionError: Bad value for metric CorruptBlocks expected:<1> but
> was:<0>
> 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.test.MetricsAsserts.assertGauge(MetricsAsserts.java:190)
> at
> org.apache.hadoop.hdfs.server.namenode.metrics.TestNameNodeMetrics.testCorruptBlock(TestNameNodeMetrics.java:247)
> Results :
> Failed tests:
> TestNameNodeMetrics.testCorruptBlock:247 Bad value for metric CorruptBlocks
> expected:<1> but was:<0>
> {noformat}
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