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From Onur AKTAS <onur.ak...@live.com>
Subject RE: Problem with starting Hadoop in Pseudo Distributed Mode
Date Tue, 04 Aug 2009 00:42:23 GMT

There is no default.xml in Hadoop 0.20.0, but luckly I also have release 0.18.3 and found
these..

<property>
  <name>hadoop.tmp.dir</name>
  <value>/tmp/hadoop-${user.name}</value>
  <description>A base for other temporary directories.</description>
</property>

It seems /tmp/hadoop-${user.name} is a temporary directory as description indicates, then
where is the real directory?
I deleted whole tmp directory and formatted it again.. Started the server, checked the logs
and still have same errors. 

> Date: Mon, 3 Aug 2009 17:29:52 -0700
> Subject: Re: Problem with starting Hadoop in Pseudo Distributed Mode
> From: amansk@gmail.com
> To: common-user@hadoop.apache.org
> 
> Yes, you need to change these directories. The config is put in the
> hadoop-site.xml. Or in this case, separately in the 3 xmls. See the
> default xml for syntax and property name.
> 
> On 8/3/09, Onur AKTAS <onur.aktas@live.com> wrote:
> >
> > Is it the directory that Hadoop uses?
> >
> > /tmp/hadoop-oracle
> > /tmp/hadoop-oracle/dfs/
> > /tmp/hadoop-oracle/mapred/
> >
> > If yes, how can I change the directory to anywhere else? I do not want it to
> > be kept in /tmp folder.
> >
> >> From: amansk@gmail.com
> >> Date: Mon, 3 Aug 2009 17:02:50 -0700
> >> Subject: Re: Problem with starting Hadoop in Pseudo Distributed Mode
> >> To: common-user@hadoop.apache.org
> >>
> >> I'm assuming that you have no data in HDFS since it never came up... So,
> >> go
> >> ahead and clean up the directory where you are storing the datanode's data
> >> and the namenode's metadata. After that format the namenode and restart
> >> hadoop.
> >>
> >>
> >> 2009/8/3 Onur AKTAS <onur.aktas@live.com>
> >>
> >> >
> >> > Hi,
> >> >
> >> > I'm having troubles with running Hadoop in RHEL 5, I did everything as
> >> > documented in:
> >> > http://hadoop.apache.org/common/docs/r0.20.0/quickstart.html
> >> >
> >> > And configured:
> >> > conf/core-site.xml, conf/hdfs-site.xml,
> >> > conf/mapred-site.xml.
> >> >
> >> > Connected to "localhost" with ssh (did passphrase stuff etc.), then I
> >> > did
> >> > the following:
> >> >
> >> > $ bin/hadoop namenode -format
> >> > $ bin/start-all.sh
> >> > starting namenode, logging to
> >> > /hda3/ps/hadoop-0.20.0/bin/../logs/hadoop-oracle-namenode-localhost.localdomain.out
> >> > localhost: starting datanode, logging to
> >> > /hda3/ps/hadoop-0.20.0/bin/../logs/hadoop-oracle-datanode-localhost.localdomain.out
> >> > localhost: starting secondarynamenode, logging to
> >> > /hda3/ps/hadoop-0.20.0/bin/../logs/hadoop-oracle-secondarynamenode-localhost.localdomain.out
> >> > starting jobtracker, logging to
> >> > /hda3/ps/hadoop-0.20.0/bin/../logs/hadoop-oracle-jobtracker-localhost.localdomain.out
> >> > localhost: starting tasktracker, logging to
> >> > /hda3/ps/hadoop-0.20.0/bin/../logs/hadoop-oracle-tasktracker-localhost.localdomain.out
> >> >
> >> > Everything seems ok, but when I check the Hadoop Logs I see many errors.
> >> > (and they all cause HBase connection problems.)
> >> > How can I solve this problem? Here are the Logs
> >> >
> >> >  hadoop-oracle-datanode-localhost.localdomain.log:
> >> > 2009-08-04 02:54:28,971 INFO
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
> >> > /************************************************************
> >> > STARTUP_MSG: Starting DataNode
> >> > STARTUP_MSG:   host = localhost.localdomain/127.0.0.1
> >> > STARTUP_MSG:   args = []
> >> > STARTUP_MSG:   version = 0.20.0
> >> > STARTUP_MSG:   build =
> >> > https://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.20 -r
> >> > 763504; compiled by 'ndaley' on Thu Apr  9 05:18:40 UTC 2009
> >> > ************************************************************/
> >> > 2009-08-04 02:54:29,562 ERROR
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException:
> >> > Incompatible namespaceIDs in /tmp/hadoop-oracle/dfs/data: namenode
> >> > namespaceID = 36527197; datanode namespaceID = 2138759529
> >> >    at
> >> > org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:233)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:148)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:298)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:216)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1283)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1238)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1246)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1368)
> >> >
> >> > 2009-08-04 02:54:29,563 INFO
> >> > org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
> >> > /************************************************************
> >> > SHUTDOWN_MSG: Shutting down DataNode at localhost.localdomain/127.0.0.1
> >> > ************************************************************/
> >> >
> >> > ------------------------------------------------------------------------------------------
> >> > hadoop-oracle-namenode-localhost.localdomain.log
> >> > 2009-08-04 02:54:26,987 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.NameNode: STARTUP_MSG:
> >> > /************************************************************
> >> > STARTUP_MSG: Starting NameNode
> >> > STARTUP_MSG:   host = localhost.localdomain/127.0.0.1
> >> > STARTUP_MSG:   args = []
> >> > STARTUP_MSG:   version = 0.20.0
> >> > STARTUP_MSG:   build =
> >> > https://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.20 -r
> >> > 763504; compiled by 'ndaley' on Thu Apr  9 05:18:40 UTC 2009
> >> > ************************************************************/
> >> > 2009-08-04 02:54:27,116 INFO org.apache.hadoop.ipc.metrics.RpcMetrics:
> >> > Initializing RPC Metrics with hostName=NameNode, port=9000
> >> > 2009-08-04 02:54:27,174 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.NameNode: Namenode up at:
> >> > localhost.localdomain/127.0.0.1:9000
> >> > 2009-08-04 02:54:27,179 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
> >> > Initializing JVM Metrics with processName=NameNode, sessionId=null
> >> > 2009-08-04 02:54:27,180 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.metrics.NameNodeMetrics:
> >> > Initializing
> >> > NameNodeMeterics using context
> >> > object:org.apache.hadoop.metrics.spi.NullContext
> >> > 2009-08-04 02:54:27,278 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem:
> >> > fsOwner=oracle,oinstall,root,dba,oper,asmadmin
> >> > 2009-08-04 02:54:27,278 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem:
> >> > supergroup=supergroup
> >> > 2009-08-04 02:54:27,278 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem:
> >> > isPermissionEnabled=true
> >> > 2009-08-04 02:54:27,294 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.metrics.FSNamesystemMetrics:
> >> > Initializing FSNamesystemMetrics using context
> >> > object:org.apache.hadoop.metrics.spi.NullContext
> >> > 2009-08-04 02:54:27,297 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Registered
> >> > FSNamesystemStatusMBean
> >> > 2009-08-04 02:54:27,341 INFO
> >> > org.apache.hadoop.hdfs.server.common.Storage:
> >> > Number of files = 8
> >> > 2009-08-04 02:54:27,348 INFO
> >> > org.apache.hadoop.hdfs.server.common.Storage:
> >> > Number of files under construction = 2
> >> > 2009-08-04 02:54:27,351 INFO
> >> > org.apache.hadoop.hdfs.server.common.Storage:
> >> > Image file of size 923 loaded in 0 seconds.
> >> > 2009-08-04 02:54:27,351 INFO
> >> > org.apache.hadoop.hdfs.server.common.Storage:
> >> > Edits file /tmp/hadoop-oracle/dfs/name/current/edits of size 4 edits #
0
> >> > loaded in 0 seconds.
> >> > 2009-08-04 02:54:27,435 INFO
> >> > org.apache.hadoop.hdfs.server.common.Storage:
> >> > Image file of size 923 saved in 0 seconds.
> >> > 2009-08-04 02:54:27,495 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Finished loading
> >> > FSImage in 262 msecs
> >> > 2009-08-04 02:54:27,496 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Total number of
> >> > blocks
> >> > = 0
> >> > 2009-08-04 02:54:27,496 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Number of invalid
> >> > blocks = 0
> >> > 2009-08-04 02:54:27,497 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Number of
> >> > under-replicated blocks = 0
> >> > 2009-08-04 02:54:27,497 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Number of
> >> >  over-replicated blocks = 0
> >> > 2009-08-04 02:54:27,497 INFO org.apache.hadoop.hdfs.StateChange: STATE*
> >> > Leaving safe mode after 0 secs.
> >> > 2009-08-04 02:54:27,497 INFO org.apache.hadoop.hdfs.StateChange: STATE*
> >> > Network topology has 0 racks and 0 datanodes
> >> > 2009-08-04 02:54:27,497 INFO org.apache.hadoop.hdfs.StateChange: STATE*
> >> > UnderReplicatedBlocks has 0 blocks
> >> > 2009-08-04 02:54:27,696 INFO org.mortbay.log: Logging to
> >> > org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via
> >> > org.mortbay.log.Slf4jLog
> >> > 2009-08-04 02:54:27,775 INFO org.apache.hadoop.http.HttpServer: Jetty
> >> > bound
> >> > to port 50070
> >> > 2009-08-04 02:54:27,775 INFO org.mortbay.log: jetty-6.1.14
> >> > 2009-08-04 02:54:28,277 INFO org.mortbay.log: Started
> >> > SelectChannelConnector@0.0.0.0:50070
> >> > 2009-08-04 02:54:28,278 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.NameNode: Web-server up at:
> >> > 0.0.0.0:50070
> >> > 2009-08-04 02:54:28,278 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > Responder: starting
> >> > 2009-08-04 02:54:28,279 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > listener on 9000: starting
> >> > 2009-08-04 02:54:28,280 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 0 on 9000: starting
> >> > 2009-08-04 02:54:28,280 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 1 on 9000: starting
> >> > 2009-08-04 02:54:28,316 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 2 on 9000: starting
> >> > 2009-08-04 02:54:28,316 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 3 on 9000: starting
> >> > 2009-08-04 02:54:28,321 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 4 on 9000: starting
> >> > 2009-08-04 02:54:28,321 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 5 on 9000: starting
> >> > 2009-08-04 02:54:28,328 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 6 on 9000: starting
> >> > 2009-08-04 02:54:28,361 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 7 on 9000: starting
> >> > 2009-08-04 02:54:28,362 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 8 on 9000: starting
> >> > 2009-08-04 02:54:28,366 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 9 on 9000: starting
> >> > 2009-08-04 02:54:38,433 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
> >> > ugi=oracle,oinstall,root,dba,oper,asmadmin    ip=/127.0.0.1
> >> >  cmd=listStatus    src=/tmp/hadoop-oracle/mapred/system    dst=null
> >> >  perm=null
> >> > 2009-08-04 02:54:38,755 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
> >> > ugi=oracle,oinstall,root,dba,oper,asmadmin    ip=/127.0.0.1
> >> > cmd=delete
> >> >    src=/tmp/hadoop-oracle/mapred/system    dst=null    perm=null
> >> > 2009-08-04 02:54:38,773 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
> >> > ugi=oracle,oinstall,root,dba,oper,asmadmin    ip=/127.0.0.1
> >> > cmd=mkdirs
> >> >    src=/tmp/hadoop-oracle/mapred/system    dst=null
> >> >  perm=oracle:supergroup:rwxr-xr-x
> >> > 2009-08-04 02:54:38,785 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
> >> > ugi=oracle,oinstall,root,dba,oper,asmadmin    ip=/127.0.0.1
> >> >  cmd=setPermission    src=/tmp/hadoop-oracle/mapred/system    dst=null
> >> >  perm=oracle:supergroup:rwx-wx-wx
> >> > 2009-08-04 02:54:38,862 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
> >> > ugi=oracle,oinstall,root,dba,oper,asmadmin    ip=/127.0.0.1
> >> > cmd=create
> >> >    src=/tmp/hadoop-oracle/mapred/system/jobtracker.info    dst=null
> >> >  perm=oracle:supergroup:rw-r--r--
> >> > 2009-08-04 02:54:38,900 INFO
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
> >> > ugi=oracle,oinstall,root,dba,oper,asmadmin    ip=/127.0.0.1
> >> >  cmd=setPermission
> >> > src=/tmp/hadoop-oracle/mapred/system/jobtracker.info   dst=null
> >> > perm=oracle:supergroup:rw-------
> >> > 2009-08-04 02:54:38,955 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 4 on 9000, call addBlock(/tmp/hadoop-oracle/mapred/system/
> >> > jobtracker.info, DFSClient_-603868025) from 127.0.0.1:51803: error:
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1256)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
> >> >    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.RPC$Server.call(RPC.java:508)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
> >> >    at java.security.AccessController.doPrivileged(Native Method)
> >> >    at javax.security.auth.Subject.doAs(Subject.java:396)
> >> >    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
> >> > 2009-08-04 02:54:39,548 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 5 on 9000, call addBlock(/tmp/hadoop-oracle/mapred/system/
> >> > jobtracker.info, DFSClient_-603868025) from 127.0.0.1:51803: error:
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1256)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
> >> >    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.RPC$Server.call(RPC.java:508)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
> >> >    at java.security.AccessController.doPrivileged(Native Method)
> >> >    at javax.security.auth.Subject.doAs(Subject.java:396)
> >> >    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
> >> > 2009-08-04 02:54:40,359 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 6 on 9000, call addBlock(/tmp/hadoop-oracle/mapred/system/
> >> > jobtracker.info, DFSClient_-603868025) from 127.0.0.1:51803: error:
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1256)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
> >> >    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.RPC$Server.call(RPC.java:508)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
> >> >    at java.security.AccessController.doPrivileged(Native Method)
> >> >    at javax.security.auth.Subject.doAs(Subject.java:396)
> >> >    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
> >> > 2009-08-04 02:54:41,969 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 7 on 9000, call addBlock(/tmp/hadoop-oracle/mapred/system/
> >> > jobtracker.info, DFSClient_-603868025) from 127.0.0.1:51803: error:
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1256)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
> >> >    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.RPC$Server.call(RPC.java:508)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
> >> >    at java.security.AccessController.doPrivileged(Native Method)
> >> >    at javax.security.auth.Subject.doAs(Subject.java:396)
> >> >    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
> >> > 2009-08-04 02:54:45,180 INFO org.apache.hadoop.ipc.Server: IPC Server
> >> > handler 8 on 9000, call addBlock(/tmp/hadoop-oracle/mapred/system/
> >> > jobtracker.info, DFSClient_-603868025) from 127.0.0.1:51803: error:
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> > java.io.IOException: File
> >> > /tmp/hadoop-oracle/mapred/system/jobtracker.infocould only be replicated
> >> > to 0 nodes, instead of 1
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1256)
> >> >    at
> >> > org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
> >> >    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.RPC$Server.call(RPC.java:508)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
> >> >    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
> >> >    at java.security.AccessController.doPrivileged(Native Method)
> >> >    at javax.security.auth.Subject.doAs(Subject.java:396)
> >> >    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
> >> >
> >> >
> >> >
> >> > _________________________________________________________________
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> 
> -- 
> 
> 
> Amandeep Khurana
> Computer Science Graduate Student
> University of California, Santa Cruz

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