Hey all,
I have been tinkering around with JBoss 3.2 RC1's session clustering feature
using a simple jsp app to test that sessions are communicated between nodes.
This sounds crazy, but does anyone know for a fact that RC1 or RC2 can perform
session clustering?
I run into null pointer exceptions when I create a session on node1 and then
try to request a jsp page on node2. It looks like node2 is attempting to look
up the session id when it fails. Here is the stack trace from a failure:
---------------------------------------------------------------------------------------------------------------
-662189858=jboss.j2ee:jndiName=clustering/HTTPSession,service=EJB
11:37:13,362 ERROR [Engine] CoyoteAdapter An exception or error occurred in
the container during the request processing
java.lang.NullPointerException
at
org.jboss.web.catalina.session.ClusterManager.findSession(ClusterManager.java:188)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:173)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:509)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
---------------------------------------------------------------------------------------------------------------
In the cluster manager file, here is the line that the stack trace if
refferencing:
---------------------------------------------------------------------------------------------------------------
177 // If jvmRoute is set manipulate the sessionid and
generate a cookie to make
178 // the session sticky on its new node
179 String jvmRoute=this.getJvmRoute();
180 if(jvmRoute!=null) {
181 String sessionid=id;
182 HttpServletResponse
response=(HttpServletResponse)ClusteredSessionValve.responseThreadLocal.get();
183
184 // kill the old Cookie
185 Cookie oldCookie=new
Cookie(Globals.SESSION_COOKIE_NAME,id);
186 oldCookie.setMaxAge(0);
187 oldCookie.setPath(contextPath);
188 response.addCookie(oldCookie);
189
---------------------------------------------------------------------------------------------------------------
Hence is the response object that is comming back null from the
ClusteredSessionValve.
--
Bruce
Playboy.com
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