I have not been able to get my program running since I switched to Tomcat 
4.1.18.  It seems that the JSP precompiler does not call release on pooled 
object before they are reused, which I understand to be required as defined by 
the JSP documentation.  I have verified this by looking at the Java code that 
is generated by Tomcat and also by putting some logging code in my release() 
methods (to make sure that the pool itself is not calling release).

Just by looking at sample code that is generated by Tomcat 4.0.x and Tomcat 
4.1.18, clearly the release() is missing.


And when I install Tomcat 4.1.24 and try to browse to the main index page, all 
I get is: 

org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: -1 in the jsp file: null

Generated servlet error:
    [javac] Since fork is true, ignoring compiler setting.
    [javac] Compiling 1 source file
    [javac] Since fork is true, ignoring compiler setting.



	at org.apache.jasper.compiler.DefaultErrorHandler.javacError
(DefaultErrorHandler.java:130)
	at org.apache.jasper.compiler.ErrorDispatcher.javacError
(ErrorDispatcher.java:293)
	at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:353)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:370)
	at org.apache.jasper.JspCompilationContext.compile
(JspCompilationContext.java:473)
	at org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:190)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:295)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:247)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:256)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNe
xt(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:191)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNe
xt(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContext.invoke
(StandardContext.java:2415)
	at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:180)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNe
xt(StandardPipeline.java:643)
	at org.apache.catalina.valves.ErrorDispatcherValve.invoke
(ErrorDispatcherValve.java:171)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNe
xt(StandardPipeline.java:641)
	at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:172)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNe
xt(StandardPipeline.java:641)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:174)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNe
xt(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
	at org.apache.coyote.tomcat4.CoyoteAdapter.service
(CoyoteAdapter.java:223)
	at org.apache.jk.server.JkCoyoteHandler.invoke
(JkCoyoteHandler.java:261)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:360)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:604)
	at org.apache.jk.common.ChannelSocket.processConnection
(ChannelSocket.java:562)
	at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:679)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
(ThreadPool.java:619)
	at java.lang.Thread.run(Unknown Source)


Is Tomcat development just getting really unstable?

Chris