Hi,
I have a problem with Hbase master, although namenode, and job tracker are working well.
2012-05-27 09:13:27,587 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server localhost/0:0:0:0:0:0:0:1:21812012-05-27 09:13:27,588 WARN org.apache.zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnectjava.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567) at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1143)
Although /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.com10.0.2.7 datanode2.dalia.com

/etc/resolve.conf
nameserever 10.0.2.3
So any info.??????    

Looks like localhost is somehow resolving to an IPv6 address.  If this is
not your intent (usually not recommended), then you can hint the JVM by
adding
-Djava.net.preferIPv4Stack=true to the HBASE_OPTS var in hbase-env.sh.

Norbert

On Sun, May 27, 2012 at 5:43 PM, Dalia Sobhy <[EMAIL PROTECTED]>wrote:

>
> Hi,
> I have a problem with Hbase master, although namenode, and job tracker are
> working well.
> 2012-05-27 09:13:27,587 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/0:0:0:0:0:0:0:1:21812012-05-27
> 09:13:27,588 WARN org.apache.zookeeper.ClientCnxn: Session 0x0 for server
> null, unexpected error, closing socket connection and attempting
> reconnectjava.net.ConnectException: Connection refused    at
> sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)     at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
>   at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1143)
> Although /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.com10.0.2.7
> datanode2.dalia.com
>
> /etc/resolve.conf
> nameserever 10.0.2.3
> So any info.??????

disable your IPv6 settings..problem with IPv6 is that using 0.0.0.0
for various networking-related Hadoop configuration options will
result in Hadoop binding to the IPv6 addresses..add the following
lines at the end of your /etc/sysctl.conf -

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

Regards,
    Mohammad Tariq
On Mon, May 28, 2012 at 7:07 AM, Norbert Burger
<[EMAIL PROTECTED]> wrote:
> Looks like localhost is somehow resolving to an IPv6 address.  If this is
> not your intent (usually not recommended), then you can hint the JVM by
> adding
> -Djava.net.preferIPv4Stack=true to the HBASE_OPTS var in hbase-env.sh.
>
> Norbert
>
> On Sun, May 27, 2012 at 5:43 PM, Dalia Sobhy <[EMAIL PROTECTED]>wrote:
>
>>
>> Hi,
>> I have a problem with Hbase master, although namenode, and job tracker are
>> working well.
>> 2012-05-27 09:13:27,587 INFO org.apache.zookeeper.ClientCnxn: Opening
>> socket connection to server localhost/0:0:0:0:0:0:0:1:21812012-05-27
>> 09:13:27,588 WARN org.apache.zookeeper.ClientCnxn: Session 0x0 for server
>> null, unexpected error, closing socket connection and attempting
>> reconnectjava.net.ConnectException: Connection refused    at
>> sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)     at
>> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
>>   at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1143)
>> Although /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.com10.0.2.7
>> datanode2.dalia.com
>>
>> /etc/resolve.conf
>> nameserever 10.0.2.3
>> So any info.??????