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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4845) FSEditLogLoader gets NPE while accessing INodeMap in TestEditLogRace
Date Thu, 23 May 2013 15:47:22 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13665280#comment-13665280
] 

Kihwal Lee commented on HDFS-4845:
----------------------------------

Full stack trace from a trunk nightly build:

{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}
                
> FSEditLogLoader gets NPE while accessing INodeMap in TestEditLogRace
> --------------------------------------------------------------------
>
>                 Key: HDFS-4845
>                 URL: https://issues.apache.org/jira/browse/HDFS-4845
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.0.0
>            Reporter: Kihwal Lee
>            Priority: Critical
>
> TestEditLogRace fails occasionally because it gets NPE from manipulating INodeMap while
loading edits.

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