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Date: Tue, 25 Sep 2012 20:27:10 +1100 (NCT)
From: "Vinay (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Resolved] (HDFS-3347) NullPointerException When trying to
 log to editstreams
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     [ https://issues.apache.org/jira/browse/HDFS-3347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinay resolved HDFS-3347.
-------------------------

    Resolution: Duplicate

Already fixed in HDFS-3026,
                
> NullPointerException When trying to log to editstreams
> ------------------------------------------------------
>
>                 Key: HDFS-3347
>                 URL: https://issues.apache.org/jira/browse/HDFS-3347
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>         Environment: HDFS
>            Reporter: amith
>            Assignee: amith
>
> When i try to create a file i got a exception 
> {code}
> 2012-05-02 17:42:55,768 DEBUG hdfs.StateChange (NameNodeRpcServer.java:create(402)) - *DIR* NameNode.create: file /a._COPYING_ for DFSClient_NONMAPREDUCE_1515782500_1 at 10.18.40.95
> 2012-05-02 17:42:55,770 DEBUG hdfs.StateChange (FSNamesystem.java:startFileInternal(1547)) - DIR* NameSystem.startFile: src=/a._COPYING_, holder=DFSClient_NONMAPREDUCE_1515782500_1, clientMachine=10.18.40.95, createParent=true, replication=1, createFlag=[CREATE, OVERWRITE]
> 2012-05-02 17:42:55,778 WARN  ipc.Server (Server.java:run(1701)) - IPC Server handler 1 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.create from 10.18.40.95:37973: error: java.lang.NullPointerException
> java.lang.NullPointerException
> 	at org.apache.hadoop.hdfs.server.namenode.FSEditLog.logEdit(FSEditLog.java:348)
> 	at org.apache.hadoop.hdfs.server.namenode.FSEditLog.logGenerationStamp(FSEditLog.java:755)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.nextGenerationStamp(FSNamesystem.java:4357)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1621)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFile(FSNamesystem.java:1509)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.create(NameNodeRpcServer.java:409)
> 	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.create(ClientNamenodeProtocolServerSideTranslatorPB.java:200)
> 	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:42590)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:428)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:905)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1688)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1684)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:396)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1205)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1682)
> {code}
> analysing the same, will provide the details soon.

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