Seem to randomly have my cluster servers get in a state where the server sessions tab won't display anything other than this exception.
Exception:
java.lang.AbstractMethodError: org.jivesoftware.openfire.plugin.session.RemoteSessionLocator.getIncomingServerSession([BLjava/lang/String;)Lorg/jivesoftware/openfire/session/IncomingServerSession;
at org.jivesoftware.openfire.SessionManager.getIncomingServerSessions(SessionManager.java:891)
at org.jivesoftware.openfire.admin.server_002dsession_002dsummary_jsp._jspService(server_002dsession_002dsummary_jsp.java:251)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:76)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:53)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:80)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:162)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:499)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
My stderror.log file is full of these every 30 seconds that seem somewhat related:
Oct 04, 2016 9:04:24 AM net.java.sip.communicator.util.Logger error
SEVERE: An uncaught exception occurred in thread=Thread[Server SR - 515430958,5,main] and message was: org.jivesoftware.openfire.plugin.session.RemoteSessionLocator.getIncomingServer Session([BLjava/lang/String;)Lorg/jivesoftware/openfire/session/IncomingServerSe ssion;
java.lang.AbstractMethodError: org.jivesoftware.openfire.plugin.session.RemoteSessionLocator.getIncomingServer Session([BLjava/lang/String;)Lorg/jivesoftware/openfire/session/IncomingServerSe ssion;
at org.jivesoftware.openfire.SessionManager.getIncomingServerSessions(SessionManag er.java:891)
at org.jivesoftware.openfire.server.ServerDialback.validateRemoteDomain(ServerDial back.java:506)
at org.jivesoftware.openfire.session.LocalIncomingServerSession.validateSubsequent Domain(LocalIncomingServerSession.java:246)
at org.jivesoftware.openfire.net.ServerSocketReader.processUnknowPacket(ServerSock etReader.java:143)
at org.jivesoftware.openfire.net.SocketReader.process(SocketReader.java:242)
at org.jivesoftware.openfire.net.BlockingReadingMode.readStream(BlockingReadingMod e.java:168)
at org.jivesoftware.openfire.net.BlockingReadingMode.run(BlockingReadingMode.java: 76)
at org.jivesoftware.openfire.net.SocketReader.run(SocketReader.java:145)
at java.lang.Thread.run(Thread.java:745)
Oct 04, 2016 9:04:54 AM net.java.sip.communicator.util.Logger error
SEVERE: An uncaught exception occurred in thread=Thread[Server SR - 1275205470,5,main] and message was: org.jivesoftware.openfire.plugin.session.RemoteSessionLocator.getIncomingServer Session([BLjava/lang/String;)Lorg/jivesoftware/openfire/session/IncomingServerSe ssion;
java.lang.AbstractMethodError: org.jivesoftware.openfire.plugin.session.RemoteSessionLocator.getIncomingServer Session([BLjava/lang/String;)Lorg/jivesoftware/openfire/session/IncomingServerSe ssion;
at org.jivesoftware.openfire.SessionManager.getIncomingServerSessions(SessionManag er.java:891)
at org.jivesoftware.openfire.server.ServerDialback.validateRemoteDomain(ServerDial back.java:506)
at org.jivesoftware.openfire.session.LocalIncomingServerSession.validateSubsequent Domain(LocalIncomingServerSession.java:246)
at org.jivesoftware.openfire.net.ServerSocketReader.processUnknowPacket(ServerSock etReader.java:143)
at org.jivesoftware.openfire.net.SocketReader.process(SocketReader.java:242)
at org.jivesoftware.openfire.net.BlockingReadingMode.readStream(BlockingReadingMod e.java:168)
at org.jivesoftware.openfire.net.BlockingReadingMode.run(BlockingReadingMode.java: 76)
at org.jivesoftware.openfire.net.SocketReader.run(SocketReader.java:145)
at java.lang.Thread.run(Thread.java:745)