HBase standalone failed to connect (fail to create table)

Question

I am trying to deploy Hbase in standalone mode following this article: http://hbase.apache.org/book.html#quickstart. The version is 0.92.1-cdh4.1.2

But I am getting these errors when try to create a table:

Error message:

    13/04/01 14:07:10 ERROR zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 3 retries
13/04/01 14:07:10 WARN zookeeper.ZKUtil: hconnection Unable to set watcher on znode /hbase/master
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/master
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
    at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1021)
    at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:154)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.watchAndCheckExists(ZKUtil.java:226)
    at org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.start(ZooKeeperNodeTracker.java:82)
    at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:580)
    at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.<init>(HConnectionManager.java:569)

Output log:

13/04/01 14:06:39 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=localhost:2181 sessionTimeout=180000 watcher=hconnection
13/04/01 14:06:39 INFO zookeeper.RecoverableZooKeeper: The identifier of this process is 10231@localhost
13/04/01 14:06:39 INFO zookeeper.ClientCnxn: Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (Unable to locate a login configuration)
13/04/01 14:06:39 WARN zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
        at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
13/04/01 14:06:39 WARN zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper exception: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid

My configurations:

1. Added JAVA_HOME in hbase-env.sh

2. hbase_site.xml

   <name>hbase.rootdir</name>
   
   <value>file:///home/hadoop/data</value>
   

   <name>hbase.zookeeper.property.dataDir</name>
   
   <value>file:///home/hadoop/zookeeper</value>
   

I have tried to modify /etc/hosts, which looks likes this (oracle is the hostname):

127.0.0.1   localhost oracle

or

[server ip]   localhost oracle

But these do not work for me.

My exact codes are:

[usr@oracle bin]$ ./start-hbase.sh 
starting master, logging to /home/hadoop/hbase-0.94.6/bin/../logs/hbase-usr-master-oracle.out
[usr@oracle bin]$ hbase shell
13/04/01 14:57:55 WARN conf.Configuration: hadoop.native.lib is deprecated. Instead, use io.native.lib.available
HBase Shell; enter 'help<RETURN>' for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 0.92.1-cdh4.1.2, rUnknown, Thu Nov  1 18:02:07 PDT 2012

hbase(main):001:0> create 'test','cf'

Thanks in advance!

Answer 1

Looks like you are missing hbase.zookeeper.quorum in your configuration. Please check this HBase guide chapter, it may help: http://hbase.apache.org/book/zookeeper.html

Also please check zookeeper is started on right port and (what happens more often) correct IP interfaces.

Answer 2

I'm not sure if you're on Mac, but I had this problem as well. It turns out that it was because a .DS_STORE file was in a folder of -ROOT- region server and causing a connect exception. Very strange!

Answer 3

In HBase 1.2.3 I've got almost the same error "ZooKeeper exists failed after 4 retries" in the standalone mode. It was caused by running ./start-hbase.sh without having permissions to connect to the port 2181. The solution turned out to be really simple:

sudo ./start-hbase.sh

Just in case, the configuration of hbase-site.xml is:

<configuration>
   <property>
      <name>hbase.rootdir</name>
      <value>file:///home/hadoop/HBase/HFiles</value>
   </property>
   <property>
      <name>hbase.zookeeper.property.dataDir</name>
      <value>/home/hadoop/zookeeper</value>
   </property>
</configuration>

Answer 4

Something might be related to your configuration. At first, I download HBase tar(http://hbase.apache.org/book/quickstart.html) to run HBase. I didn't follow the link to do any configuration, just download, start HBase, run "HBase shell". But when creating a table, it gave me error like you mentioned. And then, I search HBase installation on Mac, since I use Mac. I adopt to use "brew install hbase" to install HBase(http://chase-seibert.github.io/blog/2013/02/01/getting-starting-with-hbase-and-pig.html). After finished installation, I re-create the table. Success.

So re-consider your error, it must be linked with your JAVA_HOME or other configurations on HBase. Finding the answer from this way might help you.