We're seeing two possibly related issues with the Hessian Debug facilities in
our production environment.  The first is the exception pasted below.  The
second is that hessian debug will run for a few hours after we restart the
web app, then just die.  We are running 3.1.19.  Any ideas?

java.lang.ClassCastException: java.util.Date cannot be cast to
java.lang.Integer
        at
com.caucho.hessian.io.HessianDebugState$ObjectState.shift(HessianDebugState.java:1186)
        at
com.caucho.hessian.io.HessianDebugState$DateState.next(HessianDebugState.java:649)
        at
com.caucho.hessian.io.HessianDebugState.next(HessianDebugState.java:93)
        at
com.caucho.hessian.io.HessianDebugOutputStream.write(HessianDebugOutputStream.java:96)
        at java.io.OutputStream.write(OutputStream.java:99)
        at
com.caucho.hessian.io.Hessian2Output.flushBuffer(Hessian2Output.java:1541)
        at
com.caucho.hessian.io.Hessian2Output.flush(Hessian2Output.java:1522)
        at
com.caucho.hessian.io.Hessian2Output.printString(Hessian2Output.java:1450)
        at
com.caucho.hessian.io.Hessian2Output.writeString(Hessian2Output.java:1060)
        at
com.caucho.hessian.io.JavaSerializer$StringFieldSerializer.serialize(JavaSerializer.java:346)
        at
com.caucho.hessian.io.JavaSerializer.writeInstance(JavaSerializer.java:213)
        at
com.caucho.hessian.io.JavaSerializer.writeObject(JavaSerializer.java:177)
        at
com.caucho.hessian.io.Hessian2Output.writeObject(Hessian2Output.java:490)
        at
com.caucho.hessian.io.CollectionSerializer.writeObject(CollectionSerializer.java:102)
        at
com.caucho.hessian.io.Hessian2Output.writeObject(Hessian2Output.java:490)
        at
com.caucho.hessian.io.JavaSerializer$FieldSerializer.serialize(JavaSerializer.java:256)
        at
com.caucho.hessian.io.JavaSerializer.writeInstance(JavaSerializer.java:213)
        at
com.caucho.hessian.io.JavaSerializer.writeObject(JavaSerializer.java:177)
        at
com.caucho.hessian.io.Hessian2Output.writeObject(Hessian2Output.java:490)
        at
com.caucho.hessian.io.MapSerializer.writeObject(MapSerializer.java:100)
        at
com.caucho.hessian.io.Hessian2Output.writeObject(Hessian2Output.java:490)
        at
com.caucho.hessian.server.HessianSkeleton.invoke(HessianSkeleton.java:199)
        at
com.caucho.hessian.server.HessianSkeleton.invoke(HessianSkeleton.java:109)
        at
com.caucho.hessian.server.HessianServlet.service(HessianServlet.java:396)
        at
com.caucho.server.dispatch.WebServiceFilterChain.doFilter(WebServiceFilterChain.java:101)
        at com.caucho.filters.GzipFilter.doFilter(GzipFilter.java:169)
        at
com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
        at
com.caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:162)
        at
com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
        at
com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
        at
com.caucho.server.hmux.HmuxRequest.handleRequest(HmuxRequest.java:436)
        at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
        at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743)
        at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662)
        at java.lang.Thread.run(Thread.java:619)
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