java_tech_suite

Java Installation Java   JDK 8 Download Java wget   http://download.oracle.com/otn-pub/java/jdk/8u181-b13/96a7b8442fe848ef90c96a2fad6ed6d1/jdk-8u181-linux-x64.tar.gz Extract Java tar jdk-8u181-linux-x64.tar.gz Move to mv jdk-8u181-linux-x64 /usr/local/ Set Path(~/.bashrc) export JAVA_HOME=/usr/local/jdk1.7.0_71 export PATH= $PATH:$JAVA_HOME/bin Apply changes source ~/.bashrc Java Version java -version Adding a dedicated Hadoop system user We will use a dedicated Hadoop user account   for   running Hadoop. sudo addgroup hadoop_group sudo adduser --ingroup hadoop_group hduser sudo adduser hduser Configuring SSH The hadoop control scripts rely on SSH to peform cluster-wide operations. For example, there is a script for stopping and starting all the daemons in the clusters. To work seamlessly, SSH needs to be setup to allow password-less login for the had...

Hbase Configuration All the configuration files are under folder /usr/local/Hbase/conf/. **hbase-site.xml ** <property>       <name>hbase.rootdir</name>       <value>hdfs://localhost:9000/hbase</value>    </property>    <property>       <name>hbase.cluster.distributed</name>       <value>true</value>    </property>    <property>       <name>hbase.zookeeper.quorum</name>       <value>localhost</value>    </property>    <property>       <name>dfs.replication</name>       <value>1</value>    </property>    <property> ...