@Rahul Reddy Kamuru I answered the broad question with a broad answer :). I assume that you have a ton of specific questions. One would ask what are you trying to achieve, but that would reveal the ton of questions. I assume that you already know to install Websphere and Tomcat and that is not in scope for your question. I assume that you already know how to write a web services and that is not in scope of your question. If you wish to setup a JDBC connection to your service of choice in Hadoop ecosystem, check that specific service documentation. It would require a specific JDBC driver and the connection string is pretty much standard with mnor specifics for each service. If you wish to learn more about to write applications that will access various services, aside from reading the developer guides for services in the Hadoop ecosystem, I recommend this link with tutorials: http://hortonworks.com/tutorials/ I'd like to re-iterate that is not a good idea to install those web servers in the hadoop cluster for reasons that I already presented in my original response. You'd rather install them on separate servers which will access remotely services in the hadoop cluster. +++ If you feel that I answered the original question and my response helped, please don't forget to accept it as the best answer. Thanks. ... View more