java_tech_suite

  Accessing the Live Hadoop Database Put jar (Driver jar files ) in this location   /squirrel-sql-3.8.1/lib phoenix-queryserver-client-4.14.0-HBase-1.2 phoenix-4.14.0-HBase-1.2-client Create Driver first using the following steps : 1. Click on Drivers in the left hand side panel 2. Click the (+) sign to add a driver OR from Driver menu click on New Driver. The following window would pop up : 3. Fill the details following the steps below :                 i.              Enter a Name                 ii.             Example URL : jdbc:phoenix:172.16.4.103:                 iii.  ...

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...