Re: ClassCastException occurred when I set a custom thread pool with enabling JMX
Patch applied. Thanks!
> Bongjae Chang <mailto:bongjae.chang_at_gmail.com>
> December 17, 2012 11:14 PM
> Hi,
>
> When I used the HttpServer with enabling JMX and set a custom thread
> pool, I met a ClassCastException.
>
> The exception is below:
> ---
> java.lang.ClassCastException:
> com.kakao.common.util.KakaoThreadPoolExecutor cannot be cast to
> org.glassfish.grizzly.threadpool.GrizzlyExecutorService
> at
> org.glassfish.grizzly.nio.transport.jmx.NIOTransport.rebuildSubTree(NIOTransport.java:258)
> at
> org.glassfish.grizzly.nio.transport.jmx.NIOTransport.onRegister(NIOTransport.java:127)
> at
> org.glassfish.grizzly.monitoring.jmx.GrizzlyJmxManager.register(GrizzlyJmxManager.java:103)
> at
> org.glassfish.grizzly.http.server.jmx.NetworkListener.rebuildSubTree(NetworkListener.java:258)
> at
> org.glassfish.grizzly.http.server.jmx.NetworkListener.onRegister(NetworkListener.java:110)
> at
> org.glassfish.grizzly.monitoring.jmx.GrizzlyJmxManager.register(GrizzlyJmxManager.java:103)
> at
> org.glassfish.grizzly.http.server.jmx.HttpServer.rebuildSubTree(HttpServer.java:149)
> at
> org.glassfish.grizzly.http.server.jmx.HttpServer.onRegister(HttpServer.java:98)
> at
> org.glassfish.grizzly.monitoring.jmx.GrizzlyJmxManager.registerAtRoot(GrizzlyJmxManager.java:87)
> at
> org.glassfish.grizzly.http.server.HttpServer.enableJMX(HttpServer.java:531)
> at org.glassfish.grizzly.http.server.HttpServer.start(HttpServer.java:274)
> at
> com.kakao.api.server.GrizzlyWebServerBean.startWebServer(GrizzlyWebServerBean.java:132)
> at
> com.kakao.api.server.GrizzlyWebServerBeanTest.basicTest(GrizzlyWebServerBeanTest.java:50)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> ---
>
> If a user set a custom thread pool and JMX is enabled, I think that it
> is better that a user can use other monitorings such as Filters,
> Listeners and Transports except for thread pool.
>
> I attached the proposed patch based on 2.2.x simply.
>
> Thanks!
>
> Regards,
> Bongjae Chang
>