500 Servlet Exception

[show] java.lang.IllegalStateException: Can't sendRedirect() after data has committed
to the client.

java.lang.IllegalStateException: Can't sendRedirect() after data has committed
to the client.
	at com.caucho.server.connection.AbstractHttpResponse.sendRedirect(AbstractHttpResponse.java:604)
	at com.bhaskaran.ui.ServletAdapter.doPost(ServletAdapter.java:177)
	at com.bhaskaran.ui.ServletAdapter.doGet(ServletAdapter.java:93)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:114)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:91)
	at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:103)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:266)
	at com.caucho.server.hmux.HmuxRequest.handleRequest(HmuxRequest.java:435)
	at com.caucho.server.port.TcpConnection.run(TcpConnection.java:678)
	at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:721)
	at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:643)
	at java.lang.Thread.run(Thread.java:619)