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https://issues.apache.org/jira/browse/HBASE-9827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13803160#comment-13803160
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Jimmy Xiang commented on HBASE-9827:
------------------------------------
It may relate to HBASE-9813. We should fix the test. I can do that tomorrow.
> Intermittent TestLogRollingNoCluster#testContendedLogRolling failure
> --------------------------------------------------------------------
>
> Key: HBASE-9827
> URL: https://issues.apache.org/jira/browse/HBASE-9827
> Project: HBase
> Issue Type: Test
> Reporter: Ted Yu
>
> From
> https://builds.apache.org/job/HBase-TRUNK/lastCompletedBuild/testReport/org.apache.hadoop.hbase.regionserver.wal/TestLogRollingNoCluster/testContendedLogRolling/
> :
> {code}
> java.lang.AssertionError
> at org.junit.Assert.fail(Assert.java:86)
> at org.junit.Assert.assertTrue(Assert.java:41)
> at org.junit.Assert.assertFalse(Assert.java:64)
> at org.junit.Assert.assertFalse(Assert.java:74)
> at
> org.apache.hadoop.hbase.regionserver.wal.TestLogRollingNoCluster.testContendedLogRolling(TestLogRollingNoCluster.java:79)
> ...
> 2013-10-23 00:20:36,872 INFO [18] wal.FSHLog(527): Rolled WAL
> /home/jenkins/jenkins-slave/workspace/HBase-TRUNK/trunk/hbase-server/target/test-data/39875b32-a156-48ac-875f-9f67689d3a2e/logs/hlog.1382487636870
> with entries=28, filesize=30.0k; new WAL
> /home/jenkins/jenkins-slave/workspace/HBase-TRUNK/trunk/hbase-server/target/test-data/39875b32-a156-48ac-875f-9f67689d3a2e/logs/hlog.1382487636872
> 2013-10-23 00:20:36,873 INFO [51] wal.TestLogRollingNoCluster$Appender(135):
> Caught exception from Appender:51
> java.io.IOException: cannot get log writer
> at
> org.apache.hadoop.hbase.regionserver.wal.HLogFactory.createWriter(HLogFactory.java:197)
> at
> org.apache.hadoop.hbase.regionserver.wal.HLogFactory.createWALWriter(HLogFactory.java:177)
> at
> org.apache.hadoop.hbase.regionserver.wal.FSHLog.createWriterInstance(FSHLog.java:566)
> at
> org.apache.hadoop.hbase.regionserver.wal.FSHLog.rollWriter(FSHLog.java:509)
> at
> org.apache.hadoop.hbase.regionserver.wal.FSHLog.rollWriter(FSHLog.java:470)
> at
> org.apache.hadoop.hbase.regionserver.wal.TestLogRollingNoCluster$Appender.run(TestLogRollingNoCluster.java:118)
> Caused by: java.io.IOException: File already
> exists:/home/jenkins/jenkins-slave/workspace/HBase-TRUNK/trunk/hbase-server/target/test-data/39875b32-a156-48ac-875f-9f67689d3a2e/logs/hlog.1382487636872
> at
> org.apache.hadoop.fs.RawLocalFileSystem.create(RawLocalFileSystem.java:249)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.create(RawLocalFileSystem.java:241)
> at
> org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSOutputSummer.<init>(ChecksumFileSystem.java:335)
> at
> org.apache.hadoop.fs.ChecksumFileSystem.create(ChecksumFileSystem.java:381)
> at
> org.apache.hadoop.fs.ChecksumFileSystem.createNonRecursive(ChecksumFileSystem.java:395)
> at
> org.apache.hadoop.fs.FileSystem.createNonRecursive(FileSystem.java:610)
> at
> org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter.init(ProtobufLogWriter.java:68)
> at
> org.apache.hadoop.hbase.regionserver.wal.HLogFactory.createWriter(HLogFactory.java:194)
> {code}
> Looks like
> target/test-data/39875b32-a156-48ac-875f-9f67689d3a2e/logs/hlog.1382487636872
> was created already and the second FileSystem.createNonRecursive() call
> failed.
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