Re: RPC failures on redeployed GAE app. How to debug?

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Lars Ruoff

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Sep 27, 2012, 3:49:18 AM9/27/12

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Sorry, I only now discovered GAE logs:

2012-09-27 09:41:45.824 /gwtflags/FlagService 500 1670ms 0kb Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1

64.208.49.218 - - [27/Sep/2012:00:41:45 -0700] "POST /gwtflags/FlagService HTTP/1.1" 500 0 "http://7.flag-designer.appspot.com/" "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1" "7.flag-designer.appspot.com" ms=1670 cpu_ms=649 loading_request=1 instance=00c61b117cd7b723fecd41c7b8ac20dc1a78df

W 2012-09-27 09:41:45.818

Failed startup of context com.google.apphosting.utils.jetty.RuntimeAppEngineWebAppContext@1e2481b{/,/base/data/home/apps/s~flag-designer/7.361990375739197626}

org.mortbay.util.MultiException[java.lang.UnsupportedClassVersionError: com/scrontch/flags/server/FlagServiceImpl : Unsupported major.minor version 51.0, java.lang.UnsupportedClassVersionError: com/scrontch/flags/server/SvgFileService : Unsupported major.minor version 51.0]

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:219)

at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:194)

at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:134)

at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:447)

at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:452)

at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:459)

at com.google.tracing.TraceContext.runInContext(TraceContext.java:701)

at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:336)

at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:328)

at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:456)

at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)

at java.lang.Thread.run(Thread.java:679)

java.lang.UnsupportedClassVersionError: com/scrontch/flags/server/FlagServiceImpl : Unsupported major.minor version 51.0

at com.google.appengine.runtime.Request.process-165c56edce9aca6d(Request.java)

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:634)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)

at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:616)

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)