Apache HBase provides large-scale tabular storage for Hadoop using the Hadoop Distributed File System (HDFS). Cloudera recommends installing HBase in a standalone mode before you try to run it on a whole cluster.
Before using the instructions on this page to install or upgrade, install the Cloudera yum, zypper/YaST or apt repository, and install or upgrade CDH4 and make sure it is functioning correctly. For instructions, see CDH4 Installation and the instructions for upgrading to CDH4 or upgrading from an earlier CDH4 release.
When starting, stopping and restarting CDH components, always use the service (8) command rather than running scripts in /etc/init.d directly. This is important because service sets the current working directory to / and removes most environment variables (passing only LANG and TERM) so as to create a predictable environment in which to administer the service. If you run the scripts in/etc/init.d, any environment variables you have set remain in force, and could produce unpredictable results. (If you install CDH from packages, service will be installed as part of the Linux Standard Base (LSB).)
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