JAVA_HOME to the root of your Java installationJAVA_HOME to the root of your Java installation when configuring Hadoop.
+First, you need a working instance of Hadoop. Download a recent release from
-Hadoop downloads.
-Unpack the release and connect to its top-level directory. Let this be
-${HADOOP_HOME}. Edit the file ${HADOOP_HOME}/conf/hadoop-env.sh
-to define at least JAVA_HOME. Also, add site-particular
-customizations to the file ${HADOOP_HOME}/conf/hadoop-site.xml.
-Try the following command:
bin/hadoop -+
+Start by defining the following directory variables for your convenience:
-Next, change to the hbase root. Let this be ${HBASE_HOME} It is
-usually located at ${HADOOP_HOME}/src/contrib/hbase. Configure hbase.
-Edit ${HBASE_HOME}/conf/hbase-env.sh and
-${HBASE_HOME}/conf/hbase-site.xml to make site particular settings.
-List the hosts running regionservers in ${HBASE_HOME}/conf/regionservers.
+
${HADOOP_HOME}: The root directory of your Hadoop installation.${HBASE_HOME}: The HBase root, located at
+${HADOOP_HOME}/src/contrib/hbase.+If you are running a standalone operation, proceed to Running +and Confirming Your Installation. If you are running a distributed operation, continue below. +
+ +
+Make sure you have followed
+
+Hadoop's instructions for running a distributed operation.
+Configuring HBase for a distributed operation requires modification of the following two
+files: ${HBASE_HOME}/conf/hbase-site.xml and
+${HBASE_HOME}/conf/regionservers.
-Here is how to start and then stop hbase: -
${HBASE_HOME}/bin/start-hbase.sh
+hbase-site.xml allows the user to override the properties defined in
+${HBASE_HOME}/conf/hbase-default.xml. hbase-default.xml itself
+should never be modified. At a minimum the hbase.master property should be redefined
+in hbase-site.xml to define the host:port pair on which to run the
+HMaster (read about the
+HBase master, regionservers, etc):
+
+
+<configuration>
+
+ <property>
+ <name>hbase.master</name>
+ <value>[YOUR_HOST]:[PORT]</value>
+ <description>The host and port that the HBase master runs at.
+ </description>
+ </property>
+
+</configuration>
+
+
+The regionserver file lists all the hosts running HRegionServers, one
+host per line (This file is synonymous to the slaves file at
+${HADOOP_HOME}/conf/slaves).
+
+Additional Notes on Distributed Operation
+${HBASE_HOME}/conf/hbase-env.sh.+If you are running a distributed operation you will need to start the Hadoop daemons +before starting HBase and stop the daemons after HBase has shut down. Start and +stop the Hadoop daemons as per the Hadoop +instructions. Afterwards, +or if running a standalone operation, start HBase with the following command: +
+
+${HBASE_HOME}/bin/start-hbase.sh
+
+
+Once HBase has started, enter ${HBASE_HOME}/bin/hbase shell to obtain a
+shell against HBase from which you can execute HBase commands. In the HBase shell, type
+help; to see a list of supported commands. Note that all commands in the HBase
+shell must end with ;. Test your installation by creating, viewing, and dropping
+a table, as per the help instructions. Be patient with the create and
+drop operations as they may each take 30 seconds or more. To stop hbase, exit the
+HBase shell and enter:
+
${HBASE_HOME}/bin/stop-hbase.sh
-Logs can be found in ${HADOOP_LOG_DIR}.
++If you are running a distributed operation, be sure to wait until HBase has shut down completely +before stopping the Hadoop daemons.
-To obtain a shell against a running hbase instance, run: -
${HBASE_HOME}/bin/hbase shell
-Once the shell is up, type help; to see list of supported commands.
+
+The default location for logs is ${HADOOP_HOME}/logs.