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https://issues.apache.org/jira/browse/HDFS-2433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers resolved HDFS-2433.
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Resolution: Cannot Reproduce
I don't think I've seen this fail in a long, long time. Going to close this
out. Please reopen if you disagree.
> TestFileAppend4 fails intermittently
> ------------------------------------
>
> Key: HDFS-2433
> URL: https://issues.apache.org/jira/browse/HDFS-2433
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode, namenode, test
> Affects Versions: 0.20.205.0, 1.0.0
> Reporter: Robert Joseph Evans
> Priority: Critical
> Attachments: failed.tar.bz2
>
>
> A Jenkins build we have running failed twice in a row with issues form
> TestFileAppend4.testAppendSyncReplication1 in an attempt to reproduce the
> error I ran TestFileAppend4 in a loop over night saving the results away.
> (No clean was done in between test runs)
> When TestFileAppend4 is run in a loop the testAppendSyncReplication[012]
> tests fail about 10% of the time (14 times out of 130 tries) They all fail
> with something like the following. Often it is only one of the tests that
> fail, but I have seen as many as two fail in one run.
> {noformat}
> Testcase: testAppendSyncReplication2 took 32.198 sec
> FAILED
> Should have 2 replicas for that block, not 1
> junit.framework.AssertionFailedError: Should have 2 replicas for that block,
> not 1
> at
> org.apache.hadoop.hdfs.TestFileAppend4.replicationTest(TestFileAppend4.java:477)
> at
> org.apache.hadoop.hdfs.TestFileAppend4.testAppendSyncReplication2(TestFileAppend4.java:425)
> {noformat}
> I also saw several other tests that are a part of TestFileApped4 fail during
> this experiment. They may all be related to one another so I am filing them
> in the same JIRA. If it turns out that they are not related then they can be
> split up later.
> testAppendSyncBlockPlusBbw failed 6 out of the 130 times or about 5% of the
> time
> {noformat}
> Testcase: testAppendSyncBlockPlusBbw took 1.633 sec
> FAILED
> unexpected file size! received=0 , expected=1024
> junit.framework.AssertionFailedError: unexpected file size! received=0 ,
> expected=1024
> at
> org.apache.hadoop.hdfs.TestFileAppend4.assertFileSize(TestFileAppend4.java:136)
> at
> org.apache.hadoop.hdfs.TestFileAppend4.testAppendSyncBlockPlusBbw(TestFileAppend4.java:401)
> {noformat}
> testAppendSyncChecksum[012] failed 2 out of the 130 times or about 1.5% of
> the time
> {noformat}
> Testcase: testAppendSyncChecksum1 took 32.385 sec
> FAILED
> Should have 1 replica for that block, not 2
> junit.framework.AssertionFailedError: Should have 1 replica for that block,
> not 2
> at
> org.apache.hadoop.hdfs.TestFileAppend4.checksumTest(TestFileAppend4.java:556)
> at
> org.apache.hadoop.hdfs.TestFileAppend4.testAppendSyncChecksum1(TestFileAppend4.java:500)
> {noformat}
> I will attach logs for all of the failures. Be aware that I did change some
> of the logging messages in this test so I could better see when
> testAppendSyncReplication started and ended. Other then that the code is
> stock 0.20.205 RC2
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