12 Replies Latest reply on Nov 17, 2004 8:37 PM by Joel Parramore

    mod_jk, mod_jk2 or mod_jk1.2 ?

    Lecan Newbie

      Hello

      Here is what is written in this page :
      http://www.jboss.org/wiki/Wiki.jsp?page=UsingMod_jkWithJBoss


      "WARNING: Apache Tomcat and JBoss recommend using mod_jk1.2.x connectors only. Both mod_jk and mod_jk2 are deprecated, unsupported and no further developments are going on in the community"

      I find this very strange, because nothing is written anywhere on Tomcat's website.
      More, on tomcat connectors' wbesite, we can see that mod_jk1.2 seems to be mod_jk (with 2 numbers after) and that jk2 is jk rewritten. No sign of deprecation ...

      So, who to believe ?

      Damien


        • 1. 3850610
          Lecan Newbie

          Hello,
          I am using jboss-3.2.3.
          My application is running on a partition consisting of two nodes.
          I have a client application that uses HAJNDI to balance its requests on both nodes of the partition. This application that runs on one of the two nodes consists of a minimal and separate instance of jboss.
          My problem is the following.
          When the client is under heavy traffic, it responds correctly for 7-8 hours.
          After 7-8 hours it stops, waiting forever on the JNDI lookup of the Home reference of the EJB is asking for.
          I appended the stacktrace of the client thread and the most of the thread dump of the server.
          Can you help me ? I tried to search on forums, but I could not find anything similar.
          Thanks in advance.

          Ludovico

          Here is the client thread:


          "Thread-872" daemon prio=1 tid=0xa8743ae8 nid=0xaec sleeping[a4d8d000..a4d8d87c]
          at java.net.SocketInputStream.socketRead0(Native Method)
          at java.net.SocketInputStream.read(SocketInputStream.java:129)
          at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
          at java.io.BufferedInputStream.read(BufferedInputStream.java:201)
          - locked <0xab640e68> (a java.io.BufferedInputStream)
          at java.io.ObjectInputStream$PeekInputStream.peek(ObjectInputStream.java
          :2133)
          at java.io.ObjectInputStream$BlockDataInputStream.peek(ObjectInputStream
          .java:2423)
          at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputSt
          ream.java:2433)
          at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1245)
          at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
          at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:198)
          at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:11
          07)
          at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1192)
          at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:514)
          at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:507)



          at javax.naming.InitialContext.lookup(InitialContext.java:347)
          ce)
          at ztc.tftpd.SessionControllerWrapper.handleEvent(Unknown Source)
          at ztc.tftpd.ZTCWorker.getFile(Unknown Source)
          at ztc.tftpd.ZTCWorker.getInputStream(Unknown Source)
          at ztc.tftpd.TFTPWorker.treatReadRequest(Unknown Source)
          at ztc.tftpd.TFTPWorker.processRequest(Unknown Source)
          at ztc.tftpd.TFTPWorker.run(Unknown Source)
          at java.lang.Thread.run(Thread.java:534)



          This is the stacktrace of the server:


          "HAJNDI-AutomaticDiscovery" prio=1 tid=0x081a2290 nid=0xae6 runnable [9587f000..9587f87c]
          at java.net.PlainDatagramSocketImpl.receive(Native Method)
          at java.net.DatagramSocket.receive(DatagramSocket.java:711)
          - locked <0xa56850e8> (a java.net.DatagramPacket)
          - locked <0x9e84e948> (a java.net.MulticastSocket)
          at org.jboss.ha.jndi.HANamingService$AutomaticDiscovery.run(HANamingService.java:519)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x086595a8 nid=0xae6 runnable [939fb000..939fb87c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e84e9a8> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:372)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x08b47928 nid=0xae6 waiting for monitor entry [95e7a000..95e7a87c]
          at java.io.ObjectOutputStream.verifySubclass(ObjectOutputStream.java:917)
          - waiting to lock <0x9e379258> (a sun.misc.SoftCache)
          at java.io.ObjectOutputStream.(ObjectOutputStream.java:178)
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:396)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x0933b9d8 nid=0xae6 waiting for monitor entry [91838000..9183887c]
          at java.io.ObjectOutputStream.verifySubclass(ObjectOutputStream.java:917)
          - waiting to lock <0x9e379258> (a sun.misc.SoftCache)
          at java.io.ObjectOutputStream.(ObjectOutputStream.java:178)
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:396)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x08b4ad28 nid=0xae6 waiting for monitor entry [916b5000..916b587c]
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:397)
          - waiting to lock <0x9e84f6c8> (a $Proxy23)
          at java.lang.Thread.run(Thread.java:534)

          A lot of threads as the one above are present, all waiting to lock <0x9e84f6c8>


          "HAJNDI-Listener" prio=1 tid=0x08063c70 nid=0xae6 runnable [9830a000..9830a87c]
          at java.lang.Class.getDeclaredMethods0(Native Method)
          at java.lang.Class.privateGetDeclaredMethods(Class.java:1647)
          at java.lang.Class.getDeclaredMethod(Class.java:1254)
          at java.io.ObjectOutputStream$1.run(ObjectOutputStream.java:952)
          at java.security.AccessController.doPrivileged(Native Method)
          at java.io.ObjectOutputStream.auditSubclass(ObjectOutputStream.java:944)
          at java.io.ObjectOutputStream.verifySubclass(ObjectOutputStream.java:925)
          - locked <0x9e379258> (a sun.misc.SoftCache)
          at java.io.ObjectOutputStream.(ObjectOutputStream.java:178)
          at sun.rmi.server.MarshalOutputStream.(MarshalOutputStream.java:46)
          at sun.rmi.server.MarshalOutputStream.(MarshalOutputStream.java:37)
          at java.rmi.MarshalledObject$MarshalledObjectOutputStream.(MarshalledObject.java:222)
          at java.rmi.MarshalledObject.(MarshalledObject.java:90)
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:399)
          - locked <0x9e84f6c8> (a $Proxy23)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x087b0c50 nid=0xae6 waiting for monitor entry [9678c000..9678c87c]
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:397)
          - waiting to lock <0x9e84f6c8> (a $Proxy23)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x088a8b10 nid=0xae6 waiting for monitor entry [9573e000..9573e87c]
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:397)
          - waiting to lock <0x9e84f6c8> (a $Proxy23)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x086aa3c0 nid=0xae6 waiting for monitor entry [902bb000..902bb87c]
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:397)
          - waiting to lock <0x9e84f6c8> (a $Proxy23)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x080641d8 nid=0xae6 waiting for monitor entry [94147000..9414787c]
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:397)
          - waiting to lock <0x9e84f6c8> (a $Proxy23)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x0860d168 nid=0xae6 waiting for monitor entry [911b2000..911b287c]
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:397)
          - waiting to lock <0x9e84f6c8> (a $Proxy23)
          at java.lang.Thread.run(Thread.java:534)

          "HAJNDI-Listener" prio=1 tid=0x08a6c490 nid=0xae6 waiting for monitor entry [92115000..9211587c]
          at org.jboss.ha.jndi.HANamingService.run(HANamingService.java:397)
          - waiting to lock <0x9e84f6c8> (a $Proxy23)
          at java.lang.Thread.run(Thread.java:534)

          "TP-Processor5" daemon prio=1 tid=0x089f83f8 nid=0xae6 in Object.wait() [8fdc8000..8fdc887c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa5179e68> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
          at java.lang.Object.wait(Object.java:429)
          at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:653)
          - locked <0xa5179e68> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
          at java.lang.Thread.run(Thread.java:534)

          "JNP Server" prio=1 tid=0x09303078 nid=0xae6 runnable [961f7000..961f787c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e376cb8> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at org.jnp.server.Main.run(Main.java:281)
          at java.lang.Thread.run(Thread.java:534)

          "MERGE2.FindSubgroups thread" daemon prio=1 tid=0x08e24830 nid=0xae6 runnable [98208000..9820887c]
          at org.jgroups.protocols.MERGE2$FindSubgroups.run(MERGE2.java:230)
          at java.lang.Thread.run(Thread.java:534)

          "ReusableThread" daemon prio=1 tid=0x08084418 nid=0xae6 in Object.wait() [944c7000..944c787c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4ef2490> (a org.jgroups.util.ReusableThread)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.ReusableThread.run(ReusableThread.java:176)
          - locked <0xa4ef2490> (a org.jgroups.util.ReusableThread)
          at java.lang.Thread.run(Thread.java:534)

          "Scheduler main thread" daemon prio=1 tid=0x087a1ff8 nid=0xae6 in Object.wait() [9850e000..9850e87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4eefa08> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.peek(Queue.java:377)
          - locked <0xa4eefa08> (a java.lang.Object)
          at org.jgroups.util.Scheduler.run(Scheduler.java:64)
          at java.lang.Thread.run(Thread.java:534)

          "UDP mcast receiver" daemon prio=1 tid=0x0891cf40 nid=0xae6 in Object.wait() [98690000..9869187c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e24da40> (a sun.misc.SoftCache)
          at java.lang.Object.wait(Object.java:429)
          at java.util.ResourceBundle.findBundle(ResourceBundle.java:862)
          - locked <0x9e24da40> (a sun.misc.SoftCache)
          at java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:730)
          at java.util.ResourceBundle.getBundle(ResourceBundle.java:538)
          at sun.text.resources.LocaleData$1.run(LocaleData.java:113)
          at java.security.AccessController.doPrivileged(Native Method)
          at sun.text.resources.LocaleData.getBundle(LocaleData.java:111)
          at sun.text.resources.LocaleData.getDateFormatZoneData(LocaleData.java:107)
          at java.text.DateFormatSymbols.cacheLookup(DateFormatSymbols.java:430)
          at java.text.DateFormatSymbols.initializeData(DateFormatSymbols.java:468)
          at java.text.DateFormatSymbols.(DateFormatSymbols.java:103)
          at java.text.SimpleDateFormat.(SimpleDateFormat.java:442)
          at java.text.SimpleDateFormat.(SimpleDateFormat.java:424)
          at org.jgroups.log.Format.formatTimestamp(Format.java:58)
          at org.jgroups.log.Tracer.timestamp(Tracer.java:192)
          at org.jgroups.log.Tracer.logString(Tracer.java:173)
          at org.jgroups.log.Tracer.print(Tracer.java:123)
          at org.jgroups.log.Trace.print(Trace.java:632)
          at org.jgroups.log.Trace.println(Trace.java:661)
          at org.jgroups.log.Trace.error(Trace.java:686)
          at org.jgroups.protocols.UDP.handleIncomingUdpPacket(UDP.java:554)
          at org.jgroups.protocols.UDP.run(UDP.java:210)
          at java.lang.Thread.run(Thread.java:534)

          "TimeScheduler.Thread" daemon prio=1 tid=0x0867cb00 nid=0xae6 in Object.wait() [98793000..9879387c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4eca3c8> (a org.jgroups.util.TimeScheduler$TaskQueue)
          at org.jgroups.util.TimeScheduler._run(TimeScheduler.java:323)
          - locked <0xa4eca3c8> (a org.jgroups.util.TimeScheduler$TaskQueue)
          at org.jgroups.util.TimeScheduler.access$000(TimeScheduler.java:45)
          at org.jgroups.util.TimeScheduler$Loop.run(TimeScheduler.java:117)
          at java.lang.Thread.run(Thread.java:534)

          "UpHandler (STATE_TRANSFER)" daemon prio=1 tid=0x0867bf40 nid=0xae6 in Object.wait() [98814000..9881487c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4ede670> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4ede670> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (STATE_TRANSFER)" daemon prio=1 tid=0x0867ae80 nid=0xae6 in Object.wait() [98895000..9889587c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4ede698> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4ede698> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "UpHandler (GMS)" daemon prio=1 tid=0x0867a2c0 nid=0xae6 in Object.wait() [98916000..9891687c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4ede2c8> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4ede2c8> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (GMS)" daemon prio=1 tid=0x08b4ab78 nid=0xae6 in Object.wait() [98997000..9899787c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4ede2f0> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4ede2f0> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "UpHandler (FRAG)" daemon prio=1 tid=0x08b49ab8 nid=0xae6 in Object.wait() [98a18000..98a1887c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edc030> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edc030> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (FRAG)" daemon prio=1 tid=0x08b48ef8 nid=0xae6 in Object.wait() [98a99000..98a9987c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edc058> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edc058> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "UpHandler (UNICAST)" daemon prio=1 tid=0x08b48338 nid=0xae6 in Object.wait() [98b1a000..98b1a87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edbdf8> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edbdf8> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (UNICAST)" daemon prio=1 tid=0x087b1660 nid=0xae6 in Object.wait() [98b9b000..98b9b87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edbe20> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edbe20> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "UpHandler (STABLE)" daemon prio=1 tid=0x087b0aa0 nid=0xae6 in Object.wait() [98c1c000..98c1c87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edbbc0> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edbbc0> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (STABLE)" daemon prio=1 tid=0x08f6ad90 nid=0xae6 in Object.wait() [98c9d000..98c9d87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edbbe8> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edbbe8> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "UpHandler (NAKACK)" daemon prio=1 tid=0x088a8d58 nid=0xae6 in Object.wait() [98d1e000..98d1e87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edb900> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edb900> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (NAKACK)" daemon prio=1 tid=0x08682860 nid=0xae6 in Object.wait() [98d9f000..98d9f87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edb928> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edb928> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "UpHandler (VERIFY_SUSPECT)" daemon prio=1 tid=0x087a41b8 nid=0xae6 in Object.wait() [98e20000..98e2087c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edb708> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edb708> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (VERIFY_SUSPECT)" daemon prio=1 tid=0x0867cd20 nid=0xae6 in Object.wait() [98ea1000..98ea187c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edb730> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edb730> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "UpHandler (FD)" daemon prio=1 tid=0x0897e030 nid=0xae6 in Object.wait() [98f22000..98f2287c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edb410> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edb410> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (FD)" daemon prio=1 tid=0x08b6dfd8 nid=0xae6 in Object.wait() [98fa3000..98fa387c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edb438> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edb438> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "UpHandler (PING)" daemon prio=1 tid=0x08f6c3e8 nid=0xae6 in Object.wait() [98610000..9861087c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edb080> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edb080> (a java.lang.Object)
          at org.jgroups.stack.UpHandler.run(Protocol.java:44)

          "DownHandler (PING)" daemon prio=1 tid=0x08405490 nid=0xae6 in Object.wait() [97e00000..97e0087c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0xa4edb0a8> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jgroups.util.Queue.remove(Queue.java:217)
          - locked <0xa4edb0a8> (a java.lang.Object)
          at org.jgroups.stack.DownHandler.run(Protocol.java:98)

          "Thread-126" daemon prio=1 tid=0x08a74020 nid=0xae6 runnable [98106000..9810687c]
          at java.net.SocketInputStream.socketRead0(Native Method)
          at java.net.SocketInputStream.read(SocketInputStream.java:129)
          at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
          at java.io.BufferedInputStream.read1(BufferedInputStream.java:222)
          at java.io.BufferedInputStream.read(BufferedInputStream.java:277)
          - locked <0x9ec03458> (a java.io.BufferedInputStream)
          at com.sun.jndi.ldap.Connection.run(Connection.java:780)
          at java.lang.Thread.run(Thread.java:534)

          "IdleRemover" daemon prio=1 tid=0x08c24918 nid=0xae6 in Object.wait() [9794e000..9794e87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9ebf4890> (a java.util.ArrayList)
          at org.jboss.resource.connectionmanager.IdleRemover$1.run(IdleRemover.java:66)
          - locked <0x9ebf4890> (a java.util.ArrayList)
          at java.lang.Thread.run(Thread.java:534)

          "Thread-84" prio=1 tid=0x081e6f40 nid=0xae6 in Object.wait() [9774a000..9774a87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9ebf49b8> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at org.jboss.system.server.ServerImpl$LifeThread.run(ServerImpl.java:772)
          - locked <0x9ebf49b8> (a java.lang.Object)

          "Thread-83" daemon prio=1 tid=0x08c27bb8 nid=0xae6 runnable [97afa000..97afa87c]
          at java.util.TaskQueue.fixDown(Timer.java:553)
          at java.util.TaskQueue.rescheduleMin(Timer.java:501)
          at java.util.TimerThread.mainLoop(Timer.java:422)
          - locked <0x9ebc7aa0> (a java.lang.Object)
          - locked <0x9ebc7a68> (a java.util.TaskQueue)
          at java.util.TimerThread.run(Timer.java:382)

          "StandardManager[/ztc]" daemon prio=1 tid=0x08c36748 nid=0xae6 waiting on condition [974ab000..974ab87c]
          at java.lang.Thread.sleep(Native Method)
          at org.apache.catalina.session.StandardManager.threadSleep(StandardManager.java:810)
          at org.apache.catalina.session.StandardManager.run(StandardManager.java:869)
          at java.lang.Thread.run(Thread.java:534)

          "Connection Consumer for dest TOPIC.ztcevents" prio=1 tid=0x089ff438 nid=0xae6 in Object.wait() [975c7000..975c787c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9eaa4d78> (a java.util.LinkedList)
          at java.lang.Object.wait(Object.java:429)
          at org.jboss.mq.SpyConnectionConsumer.run(SpyConnectionConsumer.java:202)
          - locked <0x9eaa4d78> (a java.util.LinkedList)
          at java.lang.Thread.run(Thread.java:534)

          "UILServerILService Accept Thread" prio=1 tid=0x08e59598 nid=0xae6 runnable [97bfc000..97bfc87c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e933280> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at org.jboss.mq.il.uil2.UILServerILService.run(UILServerILService.java:118)
          at java.lang.Thread.run(Thread.java:534)

          "RMI TCP Accept-0" daemon prio=1 tid=0x08e59058 nid=0xae6 runnable [97c7d000..97c7d87c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e92dc68> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at sun.rmi.transport.tcp.TCPTransport.run(TCPTransport.java:334)
          at java.lang.Thread.run(Thread.java:534)

          "Thread-63" prio=1 tid=0x08904b88 nid=0xae6 in Object.wait() [97f02000..97f0287c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e91d9d0> (a java.util.LinkedList)
          at java.lang.Object.wait(Object.java:429)
          at org.jboss.resource.connectionmanager.PoolFiller$1.run(PoolFiller.java:75)
          - locked <0x9e91d9d0> (a java.util.LinkedList)
          at java.lang.Thread.run(Thread.java:534)

          "Thread-62" prio=1 tid=0x08905aa0 nid=0xae6 sleeping[97f83000..97f8387c]
          at java.lang.Thread.sleep(Native Method)
          at org.hsqldb.Log.run(Unknown Source)
          at java.lang.Thread.run(Thread.java:534)

          "Thread-61" daemon prio=1 tid=0x08dcf590 nid=0xae6 in Object.wait() [97e81000..97e8187c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e8ce198> (a org.jboss.util.timeout.TimeoutFactory)
          at java.lang.Object.wait(Object.java:429)
          at org.jboss.util.timeout.TimeoutFactory.doWork(TimeoutFactory.java:497)
          - locked <0x9e8ce198> (a org.jboss.util.timeout.TimeoutFactory)
          at org.jboss.util.timeout.TimeoutFactory.access$300(TimeoutFactory.java:27)
          at org.jboss.util.timeout.TimeoutFactory$1.run(TimeoutFactory.java:542)

          "Thread-60" daemon prio=1 tid=0x0857c878 nid=0xae6 waiting on condition [98004000..9800487c]
          at java.util.TaskQueue.fixDown(Timer.java:553)
          at java.util.TaskQueue.rescheduleMin(Timer.java:501)
          at java.util.TimerThread.mainLoop(Timer.java:422)
          - locked <0x9e922658> (a java.lang.Object)
          - locked <0x9e8c8c58> (a java.util.TaskQueue)
          at java.util.TimerThread.run(Timer.java:382)

          "RMI TCP Accept-0" daemon prio=1 tid=0x089c7c40 nid=0xae6 runnable [9838b000..9838b87c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e84ea68> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at sun.rmi.transport.tcp.TCPTransport.run(TCPTransport.java:334)
          at java.lang.Thread.run(Thread.java:534)

          "AsynchHAMembershipListener Thread" prio=1 tid=0x086812a8 nid=0xae6 in Object.wait() [9840c000..9840c87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e824058> (a java.lang.Object)
          at java.lang.Object.wait(Object.java:429)
          at EDU.oswego.cs.dl.util.concurrent.LinkedQueue.take(LinkedQueue.java:122)
          - locked <0x9e824058> (a java.lang.Object)
          at org.jboss.ha.framework.server.HAPartitionImpl$AsynchViewChangeHandler.run(HAPartitionImpl.java:933)
          at java.lang.Thread.run(Thread.java:534)

          "JBossMQ Cache Reference Softner" daemon prio=1 tid=0x08785208 nid=0xae6 runnable [99024000..9902487c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e702c78> (a java.lang.ref.ReferenceQueue$Lock)
          at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
          - locked <0x9e702c78> (a java.lang.ref.ReferenceQueue$Lock)
          at org.jboss.mq.server.MessageCache.run(MessageCache.java:225)
          at java.lang.Thread.run(Thread.java:534)

          "TP-Monitor" daemon prio=1 tid=0x08a7d5f0 nid=0xae6 runnable [990db000..990db87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e4c4838> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
          at org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:560)
          - locked <0x9e4c4838> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
          at java.lang.Thread.run(Thread.java:534)

          "TP-Processor4" daemon prio=1 tid=0x08a7d2c0 nid=0xae6 runnable [9915c000..9915c87c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e47ef08> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at org.apache.jk.common.ChannelSocket.accept(ChannelSocket.java:287)
          at org.apache.jk.common.ChannelSocket.acceptConnections(ChannelSocket.java:581)
          at org.apache.jk.common.SocketAcceptor.runIt(ChannelSocket.java:767)
          at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:677)
          at java.lang.Thread.run(Thread.java:534)

          "TP-Processor3" daemon prio=1 tid=0x081e7c00 nid=0xae6 in Object.wait() [991dd000..991dd87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e47c628> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
          at java.lang.Object.wait(Object.java:429)
          at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:653)
          - locked <0x9e47c628> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
          at java.lang.Thread.run(Thread.java:534)

          "TP-Processor2" daemon prio=1 tid=0x081e7910 nid=0xae6 in Object.wait() [9925e000..9925e87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e47c6a8> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
          at java.lang.Object.wait(Object.java:429)
          at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:653)
          - locked <0x9e47c6a8> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
          at java.lang.Thread.run(Thread.java:534)

          "TP-Processor1" daemon prio=1 tid=0x081e7718 nid=0xae6 in Object.wait() [992df000..992df87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e47c728> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
          at java.lang.Object.wait(Object.java:429)
          at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:653)
          - locked <0x9e47c728> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
          at java.lang.Thread.run(Thread.java:534)

          "TP-Monitor" daemon prio=1 tid=0x0896b010 nid=0xae6 runnable [99360000..9936087c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e47c790> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
          at org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:560)
          - locked <0x9e47c790> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
          at java.lang.Thread.run(Thread.java:534)

          "Thread-4" prio=1 tid=0x08824040 nid=0xae6 runnable [998a9000..998a987c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e393438> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at org.jboss.invocation.pooled.server.PooledInvoker.run(PooledInvoker.java:211)
          at java.lang.Thread.run(Thread.java:534)

          "RMI TCP Accept-4444" daemon prio=1 tid=0x08785ef8 nid=0xae6 runnable [9992a000..9992a87c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e38e830> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at sun.rmi.transport.tcp.TCPTransport.run(TCPTransport.java:334)
          at java.lang.Thread.run(Thread.java:534)

          "GC Daemon" daemon prio=1 tid=0x0881bc48 nid=0xae6 runnable [99a2c000..99a2c87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e376d68> (a sun.misc.GC$LatencyLock)
          at sun.misc.GC$Daemon.run(GC.java:100)
          - locked <0x9e376d68> (a sun.misc.GC$LatencyLock)

          "RMI Reaper" prio=1 tid=0x0881ae28 nid=0xae6 in Object.wait() [99aad000..99aad87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e376db8> (a java.lang.ref.ReferenceQueue$Lock)
          at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
          - locked <0x9e376db8> (a java.lang.ref.ReferenceQueue$Lock)
          at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
          at sun.rmi.transport.ObjectTable$Reaper.run(ObjectTable.java:330)
          at java.lang.Thread.run(Thread.java:534)

          "Thread-3" daemon prio=1 tid=0x080b15e0 nid=0xae6 in Object.wait() [99b2e000..99b2e87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e376e30> (a java.util.TaskQueue)
          at java.lang.Object.wait(Object.java:429)
          at java.util.TimerThread.mainLoop(Timer.java:403)
          - locked <0x9e376e30> (a java.util.TaskQueue)
          at java.util.TimerThread.run(Timer.java:382)

          "RMI TCP Accept-1098" daemon prio=1 tid=0x080b0fb0 nid=0xae6 runnable [99baf000..99baf87c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e376e98> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at sun.rmi.transport.tcp.TCPTransport.run(TCPTransport.java:334)
          at java.lang.Thread.run(Thread.java:534)

          "Thread-2" daemon prio=1 tid=0x080b2738 nid=0xae6 runnable [99c30000..99c3087c]
          at java.net.PlainSocketImpl.socketAccept(Native Method)
          at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
          - locked <0x9e376fe8> (a java.net.PlainSocketImpl)
          at java.net.ServerSocket.implAccept(ServerSocket.java:448)
          at java.net.ServerSocket.accept(ServerSocket.java:419)
          at org.jboss.web.WebServer.run(WebServer.java:258)
          at org.jboss.web.ThreadPool$Worker.run(ThreadPool.java:163)

          "Thread-0" daemon prio=1 tid=0x084822f8 nid=0xae6 runnable [99d4d000..99d4d87c]
          at java.util.TaskQueue.fixDown(Timer.java:553)
          at java.util.TaskQueue.rescheduleMin(Timer.java:501)
          at java.util.TimerThread.mainLoop(Timer.java:422)
          - locked <0x9e352608> (a java.lang.Object)
          - locked <0x9e3049c8> (a java.util.TaskQueue)
          at java.util.TimerThread.run(Timer.java:382)

          "DestroyJavaVM" prio=1 tid=0x08052570 nid=0xae6 waiting on condition [0..bfff99a4]

          "Signal Dispatcher" daemon prio=1 tid=0x080b9e78 nid=0xae6 runnable [0..0]

          "Finalizer" daemon prio=1 tid=0x080b55e0 nid=0xae6 in Object.wait() [9be8f000..9be8f87c]
          at java.lang.Object.wait(Native Method)
          - waiting on <0x9e24d7e0> (a java.lang.ref.ReferenceQueue$Lock)
          at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
          - locked <0x9e24d7e0> (a java.lang.ref.ReferenceQueue$Lock)
          at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
          at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

          "Reference Handler" daemon prio=1 tid=0x080b5200 nid=0xae6 waiting for monitor entry [9bf10000..9bf1087c]
          at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:107)
          - waiting to lock <0x9e24d548> (a java.lang.ref.Reference$Lock)

          "VM Thread" prio=1 tid=0x080b46f0 nid=0xae6 runnable

          "VM Periodic Task Thread" prio=1 tid=0x080be330 nid=0xae6 waiting on condition
          "Suspend Checker Thread" prio=1 tid=0x080b94f0 nid=0xae6 runnable



          • 2. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
            Luc Texier Apprentice

            That's why I put a big warning that you can't miss ;-)

            Believe us.

            • 3. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
              Lecan Newbie

               

              "ltexier" wrote:
              Believe us.

              Why this doesn't appear on tomcat's website ?
              Not only JBoss users could have interest to know that.

              Have you got more information about that ? (links for example ?)
              Why is mod_jk2 deprecated, but not officialy ?

              Damien

              • 4. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                Joel Parramore Newbie

                If using mod_jk v1.2.x is recommended over using mod_jk2 v2.0.x, why is that?

                Also, if both are deprecated, what's supposed to be used in their place?

                • 5. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                  Luc Texier Apprentice

                  we see people having severe performance and reliability issues using mod_jk2 almost every week. Avoid it, it stinks.

                  The mod_jk section of the Tomcat website is a mess. We know, it's confusing.

                  • 6. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                    Frank Grimes Newbie

                    For what it's worth, we have found mod_jk to be a little flakey at times, so we use neither.
                    If you don't need to rely on mod_jk for load balancing, then simply using mod_rewrite/mod_proxy will likely save you some hassles.

                    • 7. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                      Joel Parramore Newbie

                      We have Apache and JBoss chatting using mod_jk2 (though I've been testing using mod_jk as well). The JBoss servers are clustered; the Apache servers load-balance between the JBoss servers and use sticky sessions as well. I've seen a memory leak in Apache under load (and JBoss) but don't know for sure if it's mod_jkX related.

                      At the last JBoss admin class that I went to (almost a year ago), the above was pretty much recommended as a production configuration.

                      What's a good reference for the mod_rewrite/mod_proxy configuration, if we want to hoist that and see if anyone salutes? What are the consequences of using that versus mod_jkX?

                      • 8. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                        Anil Saldanha Master

                        mod_jk1.2 is the only connector that is in maintenance mode in the mod_jk family. All others are gone.

                        Work is going on a new connector based on mod_proxy.

                        For now, go with mod_jk1.2

                        The discussion on connectors has happened only in the tomcat mailing lists. They have not updated their website. If any of you wants to pour over the mailing list archives, look at "http://www.mail-archive.com/tomcat-dev@jakarta.apache.org//www.mail-archive.com/tomcat-dev@jakarta.apache.org". If you find suitable references, get back to this forum.

                        • 9. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                          Frank Grimes Newbie

                          For apache 1.3.x:

                          RewriteEngine On
                          RewriteRule ^(.*) http://localhost:8080$1 [L,P]
                          ProxyPassReverse / http://localhost:8080/

                          • 10. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                            Joel Parramore Newbie

                            After searching around on http://www.mail-archive.com/tomcat-dev@jakarta.apache.org, from what I can tell, there appears to be a loose consensus that mod_jk and mod_jk2 have become too complex and unwieldy code-wise for anyone to be bothered troubleshooting various issues surrounding them.

                            After more digging on http://www.mail-archive.com/tomcat-dev@jakarta.apache.org, I found some discussions regarding an enhanced mod_proxy, testing, and results versus mod_jk:

                            http://www.mail-archive.com/tomcat-dev@jakarta.apache.org/msg61525.html

                            I can't tell from what I've found thus far how stable people consider this to be (the ones that I've seen were from around August 2004). Session stickiness *may* be supported. Also I'm not sure yet on where it stands with respect to the Apache 2.0 branch, backport-wise (initial work seems to have been done on the 2.1 branch). More digging is required on this. :-(

                            With my own testing thus far for mod_jk versus mod_jk2, I can't tell any difference speed-wise/flakiness-wise between them. What does concern me more is what appears to be a memory leak by Apache when running with either module enabled. I need to do more testing there as well. :-(

                            Small bonus prize: some notes on using mod_proxy with mod_rewrite to redirect requests can be found at:

                            http://jakarta.apache.org/tomcat/tomcat-5.0-doc/balancer-howto.html#Using%20Apache%202%20with%20mod_proxy%20and%20mod_rewrite

                            http://wiki.apache.org/cocoon/LoadBalancingWithModProxy

                            http://wiki.apache.org/cocoon/ApacheModProxy

                            Regards,
                            Joel

                            • 11. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                              Lecan Newbie

                              mod_proxy works well as we don't need mod_jk features such as load-balancing with sticky sessions and is easier to configure.

                              But it is still hard for me to consider mod_jk1 et 2 as deprecated modules without more information.

                              Thanks

                              Damien

                              • 12. Re: mod_jk, mod_jk2 or mod_jk1.2 ?
                                Joel Parramore Newbie

                                What specific problems (performance, reliability, and "flakiness"-wise) have been observed with using mod_jk2 or mod_jk by JBoss group members, or others, that they'd care to share? Is this with Apache+JBoss/Tomcat/Jetty, or Apache+Tomcat/Jetty outside of JBoss, or either? I have been using mod_jk2 with no discernable issues thus far, but if there are issues lurking in wait, I'd like to know more about them.