what can be a reason for backends not to recognize the servlets mapped
in web.xml?
although, is there any way to use appcfg to download the code from the
backend? this seems to be the only way for me to know what my backend
"sees".
On Nov 8, 5:35 pm, atarno <zlango....@gmail.com> wrote:
> hi again,
>
> i'm still fighting the backends.:)
>
> i have some backend instances i try to call from the front end via
> task queue.
> i see in logs that the task is successfully created and the backend is
> called, but on the beckend side i always left with the following:
>
> /_ah/start 500 979ms 0kb instance=1
>
> 0.1.0.3 - - [08/Nov/2011:07:15:12 -0800] "GET /_ah/start HTTP/1.1" 500
> 0 - - "1.sync-be.zmsg-mobi.appspot.com" ms=979 cpu_ms=427 api_cpu_ms=0
> cpm_usd=0.000018 loading_request=1 exit_code=111 instance=5
>
> following by this exception for each and every servlet i have in my
> application:
>
> W 2011-11-08 17:15:12.682 EXCEPTION
> java.lang.ClassNotFoundException: com.xxx.yyy.TestServlet
> at
> com.google.appengine.runtime.Request.process-0000000000000000(Request.java)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
> at org.mortbay.util.Loader.loadClass(Loader.java:91)
> at org.mortbay.util.Loader.loadClass(Loader.java:71)
> at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)
> at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:
> 242)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
> 50)
> at
> org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:
> 685)
> at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
> at
> org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:
> 1250)
> at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:
> 517)
> at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
> 467)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
> 50)
> at com.google.tracing.TraceContext
> $TraceContextRunnable.runInContext(TraceContext.java:449)
> at com.google.tracing.TraceContext$TraceContextRunnable
> $1.run(TraceContext.java:455)
> at com.google.tracing.TraceContext.runInContext(TraceContext.java:
> 695)
> at com.google.tracing.TraceContext
> $AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:
> 333)
> at com.google.tracing.TraceContext
> $AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:
> 325)
> at com.google.tracing.TraceContext
> $TraceContextRunnable.run(TraceContext.java:453)
> at java.lang.Thread.run(Thread.java:679)
>
> turning into this great stuff, again as a number of servlets i have:
>
> Failed startup of context
> com.google.apphosting.utils.jetty.RuntimeAppEngineWebAppContext@1bbc779{/,/
> base/data/home/apps/s~zmsg-mobi/sync-be.354538568494127495}
> org.mortbay.util.MultiException[java.lang.NullPointerException,
> java.lang.NullPointerException, java.lang.NullPointerException,
> java.lang.NullPointerException, java.lang.NullPointerException,
> java.lang.NullPointerException, java.lang.NullPointerException,
> java.lang.NullPointerException]
> at
> org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:
> 656)
> at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
> at
> org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:
> 1250)
> at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:
> 517)
> at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
> 467)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
> 50)
> at
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:
> 202)
> at
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:
> 171)
> at
> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
> 123)
> at com.google.apphosting.runtime.JavaRuntime
> $RequestRunnable.run(JavaRuntime.java:392)
> at com.google.tracing.TraceContext
> $TraceContextRunnable.runInContext(TraceContext.java:449)
> at com.google.tracing.TraceContext$TraceContextRunnable
> $1.run(TraceContext.java:455)
> at com.google.tracing.TraceContext.runInContext(TraceContext.java:
> 695)
> at com.google.tracing.TraceContext
> $AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:
> 333)
> at com.google.tracing.TraceContext
> $AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:
> 325)
> at com.google.tracing.TraceContext
> $TraceContextRunnable.run(TraceContext.java:453)
> at com.google.apphosting.runtime.ThreadGroupPool
> $PoolEntry.run(ThreadGroupPool.java:162)
> at java.lang.Thread.run(Thread.java:679)
>
> what say you?
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