hadoop - HBase Error : zookeeper.znode.parent mismatch

Question

i am trying to learn Hadoop and i'v reached HBase section in Hadoop Definitive Guide. i tried to start HBase and got error. Could someone give me step-by-step guide?

opel@ubuntu:~$ zkServer.sh start
JMX enabled by default
Using config: /home/opel/zookeeper-3.4.6/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
opel@ubuntu:~$ start-hbase.sh 
starting master, logging to /home/opel/hbase-0.94.20/logs/hbase-opel-master-ubuntu.out
opel@ubuntu:~$ hbase shell
HBase Shell; enter 'help<RETURN>' for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 0.94.20, r09c60d770f2869ca315910ba0f9a5ee9797b1edc, Fri May 23 22:00:41 PDT 2014

hbase(main):001:0> status
14/06/02 22:40:44 ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
14/06/02 22:40:45 ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
14/06/02 22:40:47 ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
14/06/02 22:40:49 ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
14/06/02 22:40:51 ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
14/06/02 22:40:55 ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
14/06/02 22:40:59 ERROR client.HConnectionManager$HConnectionImplementation: Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.

ERROR: org.apache.hadoop.hbase.MasterNotRunningException: Retried 7 times

Here is some help for this command:
Show cluster status. Can be 'summary', 'simple', or 'detailed'. The
default is 'summary'. Examples:

  hbase> status
  hbase> status 'simple'
  hbase> status 'summary'
  hbase> status 'detailed'

is there anything wrong?

Answer 1

I had the same problem. For me the solution was to add the following property to the hbase-site.xml (for me it can be found under /usr/lib/hbase/conf directory):

<configuration>
        <property>
                <name>zookeeper.znode.parent</name>
                <value>/hbase-unsecure</value>
        </property>
</configuration>

But this is only for the standalone mode. I still have no idea how to solve this problem when using external ZooKeeper.