Spark Algorithms as WEB Application

Hi, I am currently working on a web application which will call the spark mllib algorithms using JERSEY ( REST API ). The problem that i am facing is that i am frequently getting permgen space Java out of memory exception and also i am not able to save decision tree models using

Deploying on TOMCAT

I am having trouble in deploying spark on tomcat server. I have created a spark java program and i have created a servlet to access it in the web application. But when ever i run the i am not able to get the output says java.lang.outOfMemory or some other errors. Is it possible to deploy spark on