I'm seeing this error sporadically as well. I don't see anything relevant in catalina.out but these seem to correlate to failed POSTs to /cas/login with SAML requests.
I believe this error is something related to your application or environment specifically.
Sep 23, 2013 6:32:13 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet cas threw exception java.lang.IllegalStateException: Cannot create a session after the response has been committed
The fundamental limitation here is that you can't set headers (i.e. Set-Cookie) after the container begins writing the HTTP response stream to the client.
edu.denison.cas.web.filter.PurgeModAuthCasCookiesFilter.doFilter(PurgeModAuthCasCookiesFilter.java:96)
Ah, what's this? Bet that's the culprit. M -- You are currently subscribed to [email protected] as: [email protected] To unsubscribe, change settings or access archives, see http://www.ja-sig.org/wiki/display/JSG/cas-user
