We will see step by step process to install and configure a multi-node Hadoop 1.x setup. Cluster & User Suppose we want to setup a cluster of 5 machines. 192.168.0.1 192.168.0.2 192.168.0.3 192.168.0.4 192.168.0.5 We want to setup the cluster with the machine 192.168.0.1 as master node and all the…
JDBC(Java Database Connectivity) provides a standard Java API (Application Programming Interface) for accessing different database systems. JDBC provides a simple, database-independent set of APIs. Using the same APIs we can access a number of database systems in Java. Components of JDBC 1) Driver For connecting to the database we need…
Basics We will see how to execute a simple SQL SELECT query in Java using JDBC Statement. Step 1 – Load Driver Class For connecting to the database we need to have a suitable Driver class loaded. This Driver class helps us to get the Connection to the corresponding database.…