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HBase >> mail # user >> Important "Undefined Error"


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RE: Important "Undefined Error"

/etc/hosts
127.0.0.1 localhost
10.0.2.3 namenode.dalia.com10.0.2.5 datanode3.dalia.com10.0.2.6 datanode1.dalia.com10.0.2.42 datanode2.dalia.com
/etc/hostnamenamenode.dalia.com
And I am always receiving this error:
INFO org.apache.hadoop.ipc.Client: Retrying connect to server: namenode/10.0.2.3:8020. Already tried 0 time(s).
Note that I have already disabled the firewall and I opened the port : ufw allow 8020
But when I run : telnet 10.0.2.3 8020 => connection refused ....
So the problem is that I cannot open the port..... :(
Note that I have tried it with other ports as 54310 and 9000 but same error occurs...
> Date: Fri, 18 May 2012 01:52:48 +0530
> Subject: Re: Important "Undefined Error"
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
>
> Please send the content of /etc/hosts and /etc/hostname file
>
> try this link
>
> http://helpmetocode.blogspot.in/2012/05/hadoop-fully-distributed-cluster.html
>
>
> for hadoop configuration
>
> On Mon, May 14, 2012 at 10:15 PM, Dalia Sobhy <[EMAIL PROTECTED]>wrote:
>
> > Yeasss
> >
> > Sent from my iPhone
> >
> > On 2012-05-14, at 5:28 PM, "N Keywal" <[EMAIL PROTECTED]> wrote:
> >
> > > In core-file.xml, do you have this?
> > >
> > > <configuration>
> > > <property>
> > > <name>fs.default.name</name>
> > > <value>hdfs://namenode:8020/hbase</value>
> > > </property>
> > >
> > > If you want hbase to connect to 8020 you must have hdfs listening on
> > > 8020 as well.
> > >
> > >
> > > On Mon, May 14, 2012 at 5:17 PM, Dalia Sobhy <[EMAIL PROTECTED]>
> > wrote:
> > >> Hiiii
> > >>
> > >> I have tried to make both ports the same.
> > >> But the prob is the hbase cannot connect to port 8020.
> > >> When i run nmap hostname, port 8020 wasnt with the list of open ports.
> > >> I have tried what harsh told me abt.
> > >> I used the same port he used but same error occurred.
> > >> Another aspect in cloudera doc it says that i have to canonical name
> > for the host ex: namenode.example.com as the hostname, but i didnt find
> > it in any tutorial. No one makes it.
> > >> Note that i am deploying my cluster in fully distributed mode i.e am
> > using 4 machines..
> > >>
> > >> So any ideas??!!
> > >>
> > >> Sent from my iPhone
> > >>
> > >> On 2012-05-14, at 4:07 PM, "N Keywal" <[EMAIL PROTECTED]> wrote:
> > >>
> > >>> Hi,
> > >>>
> > >>> There could be multiple issues, but it's strange to have in
> > hbase-site.xml
> > >>>
> > >>>  <value>hdfs://namenode:9000/hbase</value>
> > >>>
> > >>> while the core-site.xml says:
> > >>>
> > >>> <value>hdfs://namenode:54310/</value>
> > >>>
> > >>> The two entries should match.
> > >>>
> > >>> I would recommend to:
> > >>> - use netstat to check the ports (netstat -l)
> > >>> - do the check recommended by Harsh J previously.
> > >>>
> > >>> N.
> > >>>
> > >>>
> > >>> On Mon, May 14, 2012 at 3:21 PM, Dalia Sobhy <
> > [EMAIL PROTECTED]> wrote:
> > >>>>
> > >>>>
> > >>>> pleaseeeeeeeeeeee helpppppppppppppppppppp
> > >>>>
> > >>>>> From: [EMAIL PROTECTED]
> > >>>>> To: [EMAIL PROTECTED]
> > >>>>> Subject: RE: Important "Undefined Error"
> > >>>>> Date: Mon, 14 May 2012 12:20:18 +0200
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>> Hi,
> > >>>>> I tried what you told me, but nothing worked:(((
> > >>>>> First when I run this command:dalia@namenode:~$ host -v -t A
> > `hostname`Output:Trying "namenode"Host namenode not found:
> > 3(NXDOMAIN)Received 101 bytes from 10.0.2.1#53 in 13 ms My
> > core-site.xml:<configuration><property>        <name>fs.default.name</name>
> > <!--<value>hdfs://namenode:8020</value>-->
> >  <value>hdfs://namenode:54310/</value></property></configuration>
> > >>>>> My
> > hdfs-site.xml<configuration><property><name>dfs.name.dir</name><value>/data/1/dfs/nn,/nfsmount/dfs/nn</value></property><!--<property><name>dfs.data.dir</name><value>/data/1/dfs/dn,/data/2/dfs/dn,/data/3/dfs/dn</value></property>--><property><name>dfs.datanode.max.xcievers</name><value>4096</value></property><property><name>dfs.replication</name><value>3</value></property><property>