3 Replies Latest reply on Sep 5, 2014 6:48 AM by Chad Kotil

    How does hazelcast work with openfire?

    Jules Huang

      In our process of testing the new hazelcast plugin 1.2.0 with openfire 3.9.1 we tried to bring down openfire service of one of the nodes. I have three nodes. Node1 is stand alone, Node2 (with the last stanza IP 160) and Node3 (with the last stanza IP 159) are a cluster.

       

      I setup the server to server communication between Node and and the Node2/3 Cluster. I noticed the following:

      On Node1 I have usr1, Node2 usr2 and Node3 usr3. I noticed that usr2 and usr3 were recognized as usr2@node3 and usr3@node3. Why?

       

      When I shut down the openfire service of Node3, the server to server communication between Node1 and the cluster was lost. When I shut down Node2 instead the server to server communication worked fine. I was surprised by that. I was expecting the server to server communication to stay up.

       

      Initially I though it has something to do with which Node was recognized as the older Node but after restarting the nodes in different sequence i ruled that out.

       

      I also noticed that after a few shut down of the openfire services the openfire admin console displayed the following exception when I treid to access Server Sessions:

       

      java.lang.NullPointerException

      at java.util.concurrent.ConcurrentHashMap.hash(Unknown Source)

      at java.util.concurrent.ConcurrentHashMap.remove(Unknown Source)

      at org.jivesoftware.openfire.SessionManager.removeSession(SessionManager.java:1110 )

      at com.jivesoftware.openfire.session.RemoteSession.doSynchronousClusterTask(Remote Session.java:175)

      at com.jivesoftware.openfire.session.RemoteSession.isSecure(RemoteSession.java:132 )

      at org.jivesoftware.openfire.admin.server_002dsession_002dsummary_jsp._jspService( server_002dsession_002dsummary_jsp.java:309)

      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)

      at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)

      at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:547)

      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1359)

      at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 8)

      at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)

      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

      at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:74)

      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

      at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingF ilter.java:50)

      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

      at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:78)

      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

      at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:164)

      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

      at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:478)

      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)

      at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520)

      at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:22 7)

      at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:94 1)

      at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:409)

      at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186 )

      at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:875 )

      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)

      at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandler Collection.java:250)

      at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.jav a:149)

      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)

      at org.eclipse.jetty.server.Server.handle(Server.java:349)

      at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)

      at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConne ction.java:919)

      at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:582)

      at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218)

      at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51 )

      at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.jav a:586)

      at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java :44)

      at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598 )

      at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)

      at java.lang.Thread.run(Unknown Source)

        • Re: How does hazelcast work with openfire?
          Jules Huang

          I suspect the Exception was caused by the server to server communication was closed. I had the opeion as "Close connections after they have been idle for 10 minutes".

          • Re: How does hazelcast work with openfire?
            Jules Huang

            Both openfire servers of mine are on VMs on the same server. I checked that openfire seemed to be confused by that. Under Server => Server Informatin => Server Properties both have the same Server Name, chat01 though Under Environment they have correct Host names chat01 and chat02.

            • Re: How does hazelcast work with openfire?
              Chad Kotil

              I see a simliar error when trying to view current user or server sessions in a 3 node hazelcast cluster.

               

              java.lang.NullPointerException

                      at com.jivesoftware.openfire.session.RemoteSession.doSynchronousClusterTask(Remote Session.java:175)

                      at com.jivesoftware.openfire.session.RemoteSession.isSecure(RemoteSession.java:132 )

                      at org.jivesoftware.openfire.admin.server_002dsession_002dsummary_jsp._jspService( server_002dsession_002dsummary_jsp.java:303)

                      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)

                      at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)

                      at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:547)

                      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1359)

                      at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 8)

                      at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)

                      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

                      at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:74)

                      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

                      at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingF ilter.java:50)

                      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

                      at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:78)

                      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

                      at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:164)

                      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)

                      at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:478)

                      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)

                      at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520)

                      at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:22 7)

                      at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:94 1)

                      at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:409)

                      at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186 )

                      at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:875 )

                      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)

                      at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandler Collection.java:250)

                      at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.jav a:149)

                      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)

                      at org.eclipse.jetty.server.Server.handle(Server.java:349)

                      at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)

                      at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConne ction.java:919)

                      at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:582)

                      at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218)

                      at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51 )

                      at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.jav a:586)

                      at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java :44)

                      at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598 )

                      at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)

                      at java.lang.Thread.run(Thread.java:745)

               

              However it only happens when im using encryption on the cluster. Furthermore the only encryption scheme that seems to work and keep the cluster in sync is the ssl encryption. I've disabled it for now unfortunately.