HBase Installation in Hadoop Cluster

Installing Hbase

Hbase is a Distributed, non-relational and open source database. One of the key value store type database is Hbase which runs over Hadoop architecture and Hdfs file system.

 Copy the HBase tar in a particular location and untar it. We are using hbase-0.94.x.tar.gz

Ø    cd /home/hduser/utilities

Ø    tar –xzvf hbase-0.94.x.tar.gz

Edit the /home/hduser/utilities/habse/conf/hbase-env.sh and define the $JAVA_HOME

HBASE_MANAGES_ZK needs to be set as ‘true’ to use Zookeeper. If it is set as ‘false’ HBase will not consider Zookeeper

Ø    nano  /hbase/conf/hbase-env.sh

Ø    export HBASE_MANAGES_ZK=true

Edit the hbase-site.xml

Notes:

·         The value of  ‘ hbase.rootdir’ is the hostname and port number of system where namenode is running .(The port number should be same as that of core-site.xml, where namenode is running)

We have to create a folder in hdfs to store HBase data( this folder should mention in ‘hbase.rootdir’ value

Ø  Hadoop fs –ls /

Ø  Hadoop fs –mkdir /hbase

·               For multinode Hbase installation, the property ‘hbase.zookeeper.quorum’ is important. The property is used to identify the Zookeeper installed system

To Start Hbase daemons

Ø    /home/hduser/hbase/bin/start-hbase.sh

To stop Hbase daemons

Ø  /home/hduser/utilities/hbase/bin/stop-hbase.sh

The UI of Hbase is as follows. The default UI port of Hbase is 60010

http://<Ip-address of the system:60010>