Is this preventing your task from running? This is generally a harmless exception. Here's another thread on the subject, though your stack trace is a bit different:
http://groups.google.com/group/google-appengine-java/browse_thread/thread/e01814b8ceaf3e59/b340b4de766e09fb?lnk=gst&q=FinalizableReferenceQueue+app+engine#b340b4de766e09fb On Tue, Jan 26, 2010 at 5:02 PM, ravi guntuku <[email protected]>wrote: > A simple servlet which reads some data from a table - and query > analytics service and store data in another table. When i run this > servlet from browser it works (always). I have scheduled this servlet > to run as cron job and it is not working at all. And i see the below > exception in App engine logs. > > 01-26 04:36PM 45.184 > > com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue > $SystemLoader loadFinalizer: Not allowed to access system class > loader. > I 01-26 04:36PM 45.197 > com.google.appengine.repackaged.com.google.common.base.internal.Finalizer > getInheritableThreadLocalsField: Couldn't access > Thread.inheritableThreadLocals. Reference finalizer threads will > inherit thread local values. > I 01-26 04:36PM 45.201 > > com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue > <init>: Failed to start reference finalizer thread. Reference cleanup > will only occur when new references are created. > java.lang.reflect.InvocationTargetException > at com.google.appengine.runtime.Request.process-51100059fa394f2b > (Request.java) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Method.java:42) > at > > com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue.<init> > (FinalizableReferenceQueue.java:124) > at > com.google.appengine.repackaged.com.google.common.labs.misc.InterningPools > $WeakInterningPool.<clinit>(InterningPools.java:104) > at > > com.google.appengine.repackaged.com.google.common.labs.misc.InterningPools.newWeakInterningPool > (InterningPools.java:48) > at > > com.google.appengine.repackaged.com.google.io.protocol.ProtocolSupport.<clinit> > (ProtocolSupport.java:55) > at com.google.apphosting.api.DatastorePb$Query.<init> > (DatastorePb.java:1072) > at com.google.apphosting.api.DatastorePb$Query$1.<init> > (DatastorePb.java:2529) > at com.google.apphosting.api.DatastorePb$Query.<clinit> > (DatastorePb.java:2529) > at com.google.appengine.api.datastore.QueryTranslator.convertToPb > (QueryTranslator.java:28) > at com.google.appengine.api.datastore.DatastoreServiceImpl > $PreparedQueryImpl.convertToPb(DatastoreServiceImpl.java:424) > at com.google.appengine.api.datastore.DatastoreServiceImpl > $PreparedQueryImpl.runQuery(DatastoreServiceImpl.java:384) > at com.google.appengine.api.datastore.DatastoreServiceImpl > $PreparedQueryImpl.asQueryResultIterator(DatastoreServiceImpl.java: > 358) > at com.google.appengine.api.datastore.DatastoreServiceImpl > $PreparedQueryImpl$2.iterator(DatastoreServiceImpl.java:338) > at com.google.appengine.api.datastore.DatastoreServiceImpl > $PreparedQueryImpl$2.iterator(DatastoreServiceImpl.java:336) > at > > org.datanucleus.store.appengine.query.RuntimeExceptionWrappingIterable.iterator > (RuntimeExceptionWrappingIterable.java:42) > at org.datanucleus.store.appengine.query.LazyResult.<init> > (LazyResult.java:67) > at org.datanucleus.store.appengine.query.StreamingQueryResult.<init> > (StreamingQueryResult.java:63) > at > > org.datanucleus.store.appengine.query.DatastoreQuery.newStreamingQueryResultForEntities > (DatastoreQuery.java:399) > at > org.datanucleus.store.appengine.query.DatastoreQuery.wrapEntityQueryResult > (DatastoreQuery.java:372) > at > org.datanucleus.store.appengine.query.DatastoreQuery.fulfillEntityQuery > (DatastoreQuery.java:364) > at org.datanucleus.store.appengine.query.DatastoreQuery.executeQuery > (DatastoreQuery.java:265) > at > org.datanucleus.store.appengine.query.DatastoreQuery.performExecute > (DatastoreQuery.java:228) > at org.datanucleus.store.appengine.query.JDOQLQuery.performExecute > (JDOQLQuery.java:85) > at org.datanucleus.store.query.Query.executeQuery(Query.java:1489) > at org.datanucleus.store.query.Query.executeWithArray(Query.java: > 1371) > at org.datanucleus.store.query.Query.execute(Query.java:1344) > at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:221) > at sample.data.SaveGoogleData.saveData(SaveGoogleData.java:53) > at > sample.controller.DataStoreServlet.doGet(DataStoreServlet.java:21) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:693) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 487) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1093) > at > com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter > (ParseBlobUploadFilter.java:97) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1084) > at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter > (SaveSessionFilter.java:35) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1084) > at > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter > (TransactionCleanupFilter.java:43) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1084) > at org.mortbay.jetty.servlet.ServletHandler.handle > (ServletHandler.java:360) > at org.mortbay.jetty.security.SecurityHandler.handle > (SecurityHandler.java:216) > at org.mortbay.jetty.servlet.SessionHandler.handle > (SessionHandler.java:181) > at org.mortbay.jetty.handler.ContextHandler.handle > (ContextHandler.java:712) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: > 405) > at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle > (AppVersionHandlerMap.java:238) > at org.mortbay.jetty.handler.HandlerWrapper.handle > (HandlerWrapper.java:139) > at org.mortbay.jetty.Server.handle(Server.java:313) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 506) > at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete > (HttpConnection.java:830) > at > com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable > (RpcRequestParser.java:76) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > at > > com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest > (JettyServletEngineAdapter.java:135) > at com.google.apphosting.runtime.JavaRuntime.handleRequest > (JavaRuntime.java:235) > at com.google.apphosting.base.RuntimePb$EvaluationRuntime > $6.handleBlockingRequest(RuntimePb.java:5235) > at com.google.apphosting.base.RuntimePb$EvaluationRuntime > $6.handleBlockingRequest(RuntimePb.java:5233) > at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest > (BlockingApplicationHandler.java:24) > at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java: > 363) > at com.google.net.rpc.impl.Server$2.run(Server.java:838) > at com.google.tracing.LocalTraceSpanRunnable.run > (LocalTraceSpanRunnable.java:56) > at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan > (LocalTraceSpanBuilder.java:536) > at com.google.net.rpc.impl.Server.startRpc(Server.java:793) > at com.google.net.rpc.impl.Server.processRequest(Server.java:368) > at com.google.net.rpc.impl.ServerConnection.messageReceived > (ServerConnection.java:448) > at com.google.net.rpc.impl.RpcConnection.parseMessages > (RpcConnection.java:319) > at com.google.net.rpc.impl.RpcConnection.dataReceived > (RpcConnection.java:290) > at com.google.net.async.Connection.handleReadEvent(Connection.java: > 466) > at com.google.net.async.EventDispatcher.processNetworkEvents > (EventDispatcher.java:759) > at com.google.net.async.EventDispatcher.internalLoop > (EventDispatcher.java:205) > at com.google.net.async.EventDispatcher.loop(EventDispatcher.java: > 101) > at com.google.net.rpc.RpcService.runUntilServerShutdown > (RpcService.java:251) > at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run > (JavaRuntime.java:394) > at java.lang.Thread.run(Unknown Source) > Caused by: java.security.AccessControlException: access denied > (java.lang.RuntimePermission modifyThreadGroup) > at java.security.AccessControlContext.checkPermission > (AccessControlContext.java:355) > at java.security.AccessController.checkPermission > (AccessController.java:567) > at java.lang.SecurityManager.checkPermission(Unknown Source) > at java.lang.ThreadGroup.checkAccess(Unknown Source) > at java.lang.Thread.init(Unknown Source) > at java.lang.Thread.<init>(Unknown Source) > at > > com.google.appengine.repackaged.com.google.common.base.internal.Finalizer.<init> > (Finalizer.java:96) > at > > com.google.appengine.repackaged.com.google.common.base.internal.Finalizer.startFinalizer > (Finalizer.java:82) > ... 75 more > > -- > You received this message because you are 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To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
