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https://issues.apache.org/jira/browse/HDFS-4840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13664161#comment-13664161
]
Kihwal Lee commented on HDFS-4840:
----------------------------------
Another test case, TestEditLogRace got NPE too while accessing the GSet. It
might be racing with shutdown, but should handle NPE.
{panel}
2013-05-22 12:25:44,034 ERROR namenode.FSEditLogLoader
(FSEditLogLoader.java:loadEditRecords(184)) - Encountered exception on
operation MkdirOp [length=0, inodeId=18477, path=/thr-94-dir-129,
timestamp=1369225543905, permissions=jenkins:supergroup:rwxrwxrwx,
opCode=OP_MKDIR, txid=4238]
java.lang.NullPointerException
at
org.apache.hadoop.hdfs.util.LightWeightGSet.remove(LightWeightGSet.java:185)
at
org.apache.hadoop.hdfs.util.LightWeightGSet.put(LightWeightGSet.java:159)
at org.apache.hadoop.hdfs.server.namenode.INodeMap.put(INodeMap.java:62)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.addToInodeMap(FSDirectory.java:2286)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:2202)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedMkdir(FSDirectory.java:1982)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedMkdir(FSDirectory.java:1967)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:402)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:179)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:97)
at
org.apache.hadoop.hdfs.server.namenode.TestEditLogRace.verifyEditLogs(TestEditLogRace.java:239)
at
org.apache.hadoop.hdfs.server.namenode.TestEditLogRace.testEditLogRolling(TestEditLogRace.java:205)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at
org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at
org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
at
org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at
org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at
org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at
org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at
org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at
org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
{panel}
> ReplicationMonitor gets NPE during shutdown
> -------------------------------------------
>
> Key: HDFS-4840
> URL: https://issues.apache.org/jira/browse/HDFS-4840
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 3.0.0
> Reporter: Kihwal Lee
>
> TestBlocksWithNotEnoughRacks occasionally fails during test tear down because
> RaplicationMonitor gets NPE.
> Seen at https://builds.apache.org/job/Hadoop-Hdfs-trunk/1406/.
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