/etc/hosts

127.0.0.1       nagarjuna
255.255.255.255 broadcasthost
::1             localhost
fe80::1%lo0     localhost

and all configuration files pointing to   nagarjuuna  and not localhost.
 Gave me the above error

127.0.0.1       localhost
127.0.0.1       nagarjuna
255.255.255.255 broadcasthost
::1             localhost
fe80::1%lo0     localhost
and all configuration files pointing to localhost and not nagarjuna, I am
able to successsfully start the cluster.
Does it have something to do with password less ssh ?

On Thu, Feb 21, 2013 at 1:19 AM, Vijay Thakorlal <[EMAIL PROTECTED]>wrote:

> Hi Nagarjuna,****
>
> ** **
>
> What’s is in your /etc/hosts file? I think the line in logs where it says
> “DataNodeRegistration(0.0.0.0 [….]”, should be the hostname or IP of the
> datanode (124.123.215.187 since you said it’s a pseudo-distributed setup)
> and not 0.0.0.0.****
>
> ** **
>
> By the way are you using the dfs.hosts parameter for specifying the
> datanodes that can connect to the namenode?****
>
> ** **
>
> Vijay****
>
> ** **
>
> *From:* nagarjuna kanamarlapudi [mailto:[EMAIL PROTECTED]]
>
> *Sent:* 20 February 2013 15:52
> *To:* [EMAIL PROTECTED]
> *Subject:* Re: In Compatible clusterIDs****
>
> ** **
>
> ** **
>
> Hi Jean Marc,****
>
> ** **
>
> Yes, this is the cluster I am trying  to create and then will scale up.***
> *
>
> ** **
>
> As per your suggestion I deleted the folder
> /Users/nagarjunak/Documents/hadoop-install/hadoop-2.0.3-alpha/tmp_20 an
> formatted the cluster.****
>
> ** **
>
> ** **
>
> Now I get the following error.****
>
> ** **
>
> ** **
>
> 2013-02-20 21:17:25,668 FATAL
> org.apache.hadoop.hdfs.server.datanode.DataNode: Initialization failed for
> block pool Block pool BP-811644675-124.123.215.187-1361375214801 (storage
> id DS-1515823288-124.123.215.187-50010-1361375245435) service to nagarjuna/
> 124.123.215.187:9000****
>
> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException):
> Datanode denied communication with namenode: DatanodeRegistration(0.0.0.0,
> storageID=DS-1515823288-124.123.215.187-50010-1361375245435,
> infoPort=50075, ipcPort=50020,
> storageInfo=lv=-40;cid=CID-723b02a7-3441-41b5-8045-2a45a9cf96b0;nsid=1805451571;c=0)
> ****
>
>         at
> org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager.registerDatanode(DatanodeManager.java:629)
> ****
>
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.registerDatanode(FSNamesystem.java:3459)
> ****
>
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.registerDatanode(NameNodeRpcServer.java:881)
> ****
>
>         at
> org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolServerSideTranslatorPB.registerDatanode(DatanodeProtocolServerSideTranslatorPB.java:90)
> ****
>
>         at
> org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos$DatanodeProtocolService$2.callBlockingMethod(DatanodeProtocolProtos.java:18295)
> ****
>
>         at org.apache.hadoop.ipc.Protob****
>
> ** **
>
> ** **
>
> On Wed, Feb 20, 2013 at 9:10 PM, Jean-Marc Spaggiari <
> [EMAIL PROTECTED]> wrote:****
>
> Hi Nagarjuna,
>
> Is it a test cluster? Do you have another cluster running close-by?
> Also, is it your first try?
>
> It seems there is some previous data in the dfs directory which is not
> in sync with the last installation.
>
> Maybe you can remove the content of
> /Users/nagarjunak/Documents/hadoop-install/hadoop-2.0.3-alpha/tmp_20
> if it's not usefull for you, reformat your node and restart it?
>
> JM
>
> 2013/2/20, nagarjuna kanamarlapudi <[EMAIL PROTECTED]>:***
> *
>
> > Hi,
> >
> > I am trying to setup single node cluster of hadop 2.0.*
> >
> > When trying to start datanode I got the following error. Could anyone
> help
> > me out
> >
> > Block pool BP-1894309265-124.123.215.187-1361374377471 (storage id
> > DS-1175433225-124.123.215.187-50010-1361374235895) service to nagarjuna/
> > 124.123.215.187:9000