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https://issues.apache.org/jira/browse/HDFS-2903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13201540#comment-13201540
]
Hari Mankude commented on HDFS-2903:
------------------------------------
2012-02-06 20:04:09,793 ERROR namenode.FSEditLog
(JournalSet.java:mapJournalsAndReportErrors(317)) - Error:
recoverUnfinalizedSegments failed for (journal
JournalAndStream(mgr=FileJournalManager(root=/mnt/nfs1/namenode), stream=null))
java.lang.NullPointerException
at
org.apache.hadoop.hdfs.server.namenode.FileJournalManager.matchEditLogs(FileJournalManager.java:160)
at
org.apache.hadoop.hdfs.server.namenode.FileJournalManager.recoverUnfinalizedSegments(FileJournalManager.java:281)
at
org.apache.hadoop.hdfs.server.namenode.JournalSet$6.apply(JournalSet.java:516)
at
org.apache.hadoop.hdfs.server.namenode.JournalSet.mapJournalsAndReportErrors(JournalSet.java:315)
at
org.apache.hadoop.hdfs.server.namenode.JournalSet.recoverUnfinalizedSegments(JournalSet.java:513)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLog.recoverUnclosedStreams(FSEditLog.java:1053)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startActiveServices(FSNamesystem.java:517)
at
org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.startActiveServices(NameNode.java:961)
at
org.apache.hadoop.hdfs.server.namenode.ha.ActiveState.enterState(ActiveState.java:61)
at
org.apache.hadoop.hdfs.server.namenode.ha.HAState.setStateInternal(HAState.java:63)
at
org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.setState(StandbyState.java:49)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.transitionToActive(NameNode.java:915)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.transitionToActive(NameNodeRpcServer.java:997)
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.hadoop.ipc.WritableRpcEngine$Server$WritableRpcInvoker.call(WritableRpcEngine.java:494)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:862)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1608)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1604)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
> NPE if shared edits directory is not available during failover
> --------------------------------------------------------------
>
> Key: HDFS-2903
> URL: https://issues.apache.org/jira/browse/HDFS-2903
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Hari Mankude
> Assignee: Hari Mankude
>
> Journalset has a null pointer exception if shared edits directory is not
> available during HA state transition.
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