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I am going to try hbase in local, I did start one zk server,when I try to create a table like this:

create 'table', 'col'

error:

ERROR [main] client.ConnectionManager$HConnectionImplementation: The node /hbase-unsecure is not in ZooKeeper. It should have been written by the master. Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.

and: I think maybe it has something to do with the hbase-site.xml here is :

<configuration>
    <property>
    <name>hbase.rootdir</name>
    <value>file:////Users/zhaiyi/Documents/apache-hadoop/hbase</value>
  </property>
  <property>
    <name>>hbase.zookeeper.property.dataDir</name>
    <value>/Users/zhaiyi/Documents/zookeeper/server1/zookeeper-3.5.1-alpha </value>
  </property>
  <property>
        <name>zookeeper.znode.parent</name>
        <value>/hbase-unsecure</value>
    </property>
</configuration>

It doesn`t work, ask for help!! thanks!!

ps: hbase-1.1.2 & hadoop-2.6.3

ZhAIiyI
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1 Answers1

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When the HBase master is started it should create the /hbase-unsecure znode in ZooKeeper. This page is a bit out of date, but describes how HBase uses ZK. The first thing you should try is restarting the hbase master to see if that helps.

HBase provides a shell zkcli you can use to run zookeeper commands. For instance ./hbase zkcli -server host:port ls / should show you what znodes exist at the top-level. In your case it is not clear where your ZK server is, but the default port for ZK is 2181. The /hbase-unsecure znode that the error refers to should be listed in response to that command.

Note also, depending on the vendor if the hbase cluster was ever started in secure mode, the created znode will be /hbase-secure.

Martin Serrano
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  • thanks for answer, I checked that there is no node /hbase-unsecure in zk. I start a standalone zk server.HBASE_MANAGES_ZK=false. I want to kown how hbase connect with zk and I think that is where I was wrong – ZhAIiyI Dec 22 '15 at 06:05