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Date: Tue, 5 Apr 2011 16:58:53 +1000
Message-ID: <BANLkTinf67gb6_wa3r6-FXCxLupA4LfCbw@mail.gmail.com>
Subject: Re: Getting Error in Hadoop Cluster Mode
From: elton sky <eltonsky9404@gmail.com>
To: user@hbase.apache.org
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Hi,

Have you formatted your name node and data nodes before start daemons? If
not, that is the reason.

Try:
hadoop namenode -format

then on each data node:
hadoop datanode -format

Then try to start daemons.

-elton

On Tue, Apr 5, 2011 at 4:04 PM, prasunb <prasun.bhattacharjee@tcs.com>wrote:

>
> Hello,
>
> I am new in Hadoop and I am struggling to configure it in fully
> distribution
> mode.
>
> I have created three virtual machines (hadoop1, hadoop2 and hadoop3) with
> Fedora 12 and installed Hadoop in pseudo distributed mode on each of them
> successfully. I have followed the steps from cloudera site to configure
> hadoop cluster
> (https://docs.cloudera.com/display/DOC/CDH2+Deployment+on+a+Cluster ).
>
> I am getting following error when I am trying to run the "put" command on
> the cluster. Here is the error...
>
> =========================================================================
> #hadoop-0.20 fs -put foo test/
> 11/04/05 10:56:55 WARN hdfs.DFSClient: DataStreamer Exception:
> org.apache.hadoop.ipc.RemoteException: java.io.IOException: File
> /user/root/test/foo could only be replicated to 0 nodes, instead of 1
>        at
>
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1417)
>        at
> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:643)
>        at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
>        at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:557)
>        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1416)
>        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1412)
>      .
>      .
>      .
> 11/04/05 10:56:55 WARN hdfs.DFSClient: Error Recovery for block null bad
> datanode[0] nodes == null
> 11/04/05 10:56:55 WARN hdfs.DFSClient: Could not get block locations.
> Source
> file "/user/root/test/foo" - Aborting...
> put: java.io.IOException: File /user/root/test/foo could only be replicated
> to 0 nodes, instead of 1
> 11/04/05 10:56:55 ERROR hdfs.DFSClient: Exception closing file
> /user/root/test/foo : org.apache.hadoop.ipc.RemoteException:
> java.io.IOException: File /user/root/test/foo could only be replicated to 0
> nodes, instead of 1
>        at
>
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1417)
>        at
> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:643)
>        at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
>        at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>
> =============================================================================
>
>
> When I checked through the web ( http://hadoop1:50070/ ), it is showing
> Dead
> Nodes- 3 and Live Nodes- 0.
>
> Can anyone please help me to understand the problem. I have uploaded the
> configuration files, please have a look into them in case i have missed
> anything.
>
> Thanks. http://old.nabble.com/file/p31321155/hdfs-site.xml hdfs-site.xml
> http://old.nabble.com/file/p31321155/mapred-site.xml mapred-site.xml
> http://old.nabble.com/file/p31321155/hadoop-env.sh hadoop-env.sh
> http://old.nabble.com/file/p31321155/core-site.xml core-site.xml
> --
> View this message in context:
> http://old.nabble.com/Getting-Error-in-Hadoop-Cluster-Mode-tp31321155p31321155.html
> Sent from the HBase User mailing list archive at Nabble.com.
>
>

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