IPlanet 6.0 jasper exception lost

Question

Hi there
I am using iPlanet 6.0 on a win32 box (although the problem also surfaces on Solaris 2.8).
I have an web application that requires a servlet filter. I put the servlet filter in place in the web-app.xml as described by the docs, and everything works fine. That is, it works fine until one of my JSPs has a compile error. If my JSP fails to compile, I get no log message about why it failed to compile.
If I remove the servlet filter from the web-app then I get my JSP compile errors back in the error log.
I wrote the servlet filter code myself, and it does nothing much, and propogates any Exceptions upwards.
Any ideas on where this logging information goes to ?
Here is the code for a filter which hides the log for JSP compile errors.
public class SleepFilter implements Filter {
private static final long SLEEP_TIME = 5000;
private static final Logger LOG = Logger.getLogger(SleepFilter.class);
public void init(FilterConfig config) throws ServletException {
LOG.debug("Sleep filter initialised");
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
try {
LOG.debug("Going to sleep .... zzzzzzzzzzzzzzzz.");
Thread.sleep(SLEEP_TIME);
LOG.debug("Wakey wakey rise and shine.");
chain.doFilter(request, response);
} catch (InterruptedException e) {
// do nothing.
public void destroy() {
LOG.debug("Die, piggy, piggy, die.");
Thanks in advance for your help
Brian

Answer 1

This problem has been reported as bug 4813726. Unfortunately, the issue has not yet been fixed, and I'm not aware of any work arounds.
(It may be worth noting that the problem doesn't occur with the new Servlet/JSP container in Web Server 6.1.)