IOException when calling createNewGSFile () in servlet

I am getting IOException when trying to write to google store

Stack trace

java.io.IOException at com.google.appengine.api.files.FileServiceImpl.translateException (FileServiceImpl.java:601) at com.google.appengine.api.files.FileServiceImpl.makeSyncCall (FileServiceImpl.java:574) google.appengine.api.files.FileServiceImpl.create (FileServiceImpl.java:481) at com.google.appengine.api.files.FileServiceImpl.createNewGSFile (FileServiceImpl.java:151) on guestbook .StoreFilesertServava : 106) in the guestbook .StoreFileServlet.doPost (StoreFileServlet.java:76) at javax.servlet.http.HttpServlet.service (HttpServlet.java:637) at javax.servlet.http.HttpServlet.servlet (Http.HttpServlet.serv ) at org.mortbay.jetty.servlet.ServletHolder.handle (ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter (ServletHandler.java:1166) at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter (ParseBlobUploadFilter.java:102) at org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter (ServletHandler.javaetgo:1157) in SaveSessionFilter.doFilter (SaveSessionFilter.java:35) at org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter (ServletHandler.java:1157) at com.google.apphosting.utils.servlet.TransactionCleanFilupFilterFilter 43) at org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter (ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle (ServletHandler.java:388) at org.mortsebay.jetty .SecurityHandler.handle (SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle (SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle (ContextHandler.java:765) at org.mortbay.jetty.webapp.WebAppContext.handle (WebAppContext.java:418) at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.Handler (AppVersionHandlerMap.Handle (AppVersion 249) at org.mortbay.jetty.handler.HandlerWrapper.handle (HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle (Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest (HttpConnection .java: 542) at org.mortbay.jetty.HttpConnection $ RequestHandler.headerComplete (HttpConnection.java:923) at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable (RpcRequestParser.java) jetty.HttpConnection.handle (HttpConnection.java:404) at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest (JettyServletEngineAdapter.java:135) at com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.run (JavaRuntime.java:446) at com.google.tracing.TraceContext $ TraceContextRunnable.runInContext (TraceContext.java:449) at com.google.tracing.TraceContext $ TraceContext .java: 455) at com.google.tracing.TraceContext.runInContext (TraceContext.java:695) at com.google.tracing.TraceContext $ AbstractTraceContextCallback.runInInheritedContextNoUnref (TraceContext.java:333.text AbstractTraceContextCallback.runInInheritedContext (TraceContext.java:325) at com.google.tracing.TraceContext $ TraceContextRunnable.run (TraceContext.java:453) at com.google.apphosting.runtime.ThreadGroupr $ PoolEntava:453) at com.google.apphosting.runtime.ThreadGroupr $ PoolEntava:325 at java.lang.Thread.run (Thread.java:679) Thrown by: com.google.apphosting.api.ApiProxy $ ApplicationException:ApplicationError: 8: at java.lang.Thread.getStackTrace (Thread.java:1495) at com.google.apphosting.runtime.ApiProxyImpl.doSyncCall (ApiProxyImpl.java:237) at com.google.apphosting.runtime.ApiProxyImpl.access $ 000 (ApiProxyImpl.java:68) at com.google.apphosting.runtime.ApiProxyImpl $ 1.run (ApiProxyImpl.java:182) at com.google.apphosting.runtime.ApiProxyImpl $ 1.run (ApiProxyImpl.java:180) in java .security.AccessController.doPrivileged (Native Method) at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall (ApiProxyImpl.java:180) at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall (ApiProxyImpl.java .google.apphosting.api.ApiProxy.makeSyncCall (ApiProxy.java:101) at com.google.apphosting.api.ApiProxy.makeSyncCall (ApiProxy.java:50) at com.google.appengine.api.files.FileServiceImpl.makeSyncCall (FileServiceImpl.java:570) ... 36 more Caused by: com.google.apphosting.api.ApiProxy $ ApplicationException: ApplicationError: 8: at com.google.apphosting.runtime.ApiProxyImpl $ AsyncApiFuture.failure (ApiProxyImpl.java 546) at com.google.net.rpc3.client.RpcStub $ RpcCallbackDispatcher $ 1.runInContext (RpcStub.java:788) at com.google.tracing.TraceContext $ TraceContextRunnable $ 1.run (TraceContext at com.java:455) .tracing.TraceContext.runInContext (TraceContext.java:695) at com.google.tracing.TraceContext $ AbstractTraceContextCallback.runInInheritedContextNoUnref (TraceContext.java:333) at com.google.tracing.TraceContext $ Com.google.tracing.TraceContext $ AbstractTraceContextCallback ) to com.google.tracing.TraceContext $ TraceContextRunnable.run (TraceContext.java:453) at com.google.net.rpc3.client.RpcStub $ RpcCallbackDispatcher.rpcFinished (RpcStub.java:828) at com.google.net.rpc3.client.RpcStub $ RpcCallbackDispatcher.failure (RpcStub.java:819) at com.google.net.rpteclientlient runCallbacks (RpcClientInternalContext.java:906) at com.google.net.rpc3.impl.client.RpcClientInternalContext.finishRpcAndNotifyApp (RpcClientInternalContext.java:809) at com.googleimpl.rpclictive java: 1062) at com.google.net.rpc3.impl.client.RpcNetChannel.finishRpc (RpcNetChannel.java:908) at com.google.net.rpc3.impl.client.RpcNetChannel.handleResponse (RpcNetChannel:22:22 at com.google.net.rpc3.impl.client.RpcNetChannel.messageReceived (RpcNetChannel.java:2077) at com.google.net.rpc3.impl.client.RpcNetChannel.access $ 2000 (RpcNetChannel.java:147) at com.google.net.rpc3.impl.client.RpcNetChannel $ TransportCallback.receivedMessage (RpcNetChannel.java:3115) at com.google.net.rpc3.impl.client.RpcChannelTransportData $ TransportCallback.receive 602) at com.google.net.rpc3.impl.wire.RpcBaseTransport.receivedMessage (RpcBaseTransport.java:420) at com.google.net.rpc3.impl.wire.RpcClientTcpTransport.parseOneMessentage (RpcTransport) .google.net.rpc3.impl.wire.RpcClientTcpTransport.parseMessages (RpcClientTcpTransport.java:651) at com.google.net.rpc3.impl.wire.RpcClientTcpTransport.access $ 100 (RpcGavaClient) net.rpc3.impl.wire.RpcClientTcpTransport $ 1.dataReceived (RpcClientTcpTransport.java:293) at com.google.net.async3.SocketConnection.handleNetworkReadEvent (SocketConnection.java:843) at com.google.net.async3.SocketConnection.access $ 400 (SocketConnection.java:40) at com.google.net.async3.SocketConnection $ NetworkReadHandlerImpl.run (SocketConnection.java:872) at com.google.net. eventmanager.AbstractFutureTask $ Sync.innerRun (AbstractFutureTask.java:260) at com.google.net.eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager.EventManagerImpl.runTask (EventMavaanager: 576) at com.google.net.eventmanager.EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerImpl.runWorkerLoop (EventManagerImpl.java.foW8) at com.google.net.eventmanager .runWorkerLoop (WorkerThreadInfo.java:134) at com.google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)1833)1833)google.net.async3.SocketConnection.access $ 400 (SocketConnection.java:40) at com.google.net.async3.SocketConnection $ NetworkReadHandlerImpl.run (SocketConnection.java:872) at com.google.net.eventmanager.AbstractFutureTask $ Sync .innerRun (AbstractFutureTask.java:260) at com.google.net.eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager.EventManagerImpl.runTask (EventManagerImpl.java:576) at com. google.net.eventmanager.EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerImpl.runWorkerLoop (EventManagerImpl.java:878) at com.foogle.net.eventInager.WorkerreadThorker java: 134) at com.google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)google.net.async3.SocketConnection.access $ 400 (SocketConnection.java:40) at com.google.net.async3.SocketConnection $ NetworkReadHandlerImpl.run (SocketConnection.java:872) at com.google.net.eventmanager.AbstractFutureTask $ Sync .innerRun (AbstractFutureTask.java:260) at com.google.net.eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager.EventManagerImpl.runTask (EventManagerImpl.java:576) at com. google.net.eventmanager.EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerImpl.runWorkerLoop (EventManagerImpl.java:878) at com.foogle.net.eventInager.WorkerreadThorker java: 134) at com.google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)SocketConnection.access $ 400 (SocketConnection.java:40) at com.google.net.async3.SocketConnection $ NetworkReadHandlerImpl.run (SocketConnection.java:872) at com.google.net.eventmanager.AbstractFutureTask $ Sync.innerRun (AbstractFutavaTask : 260) at com.google.net.eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager.EventManagerImpl.runTask (EventManagerImpl.java:576) at com.google.net.eventmanager. EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerImpl.runWorkerLoop (EventManagerImpl.java:878) at com.google.net.eventmanager.WorkfoerThreadInfo.runWorker:997) .google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)SocketConnection.access $ 400 (SocketConnection.java:40) at com.google.net.async3.SocketConnection $ NetworkReadHandlerImpl.run (SocketConnection.java:872) at com.google.net.eventmanager.AbstractFutureTask $ Sync.innerRun (AbstractFutavaTask : 260) at com.google.net.eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager.EventManagerImpl.runTask (EventManagerImpl.java:576) at com.google.net.eventmanager. EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerImpl.runWorkerLoop (EventManagerImpl.java:878) at com.google.net.eventmanager.WorkfoerThreadInfo.runWorker:997) .google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)40) at com.google.net.async3.SocketConnection $ NetworkReadHandlerImpl.run (SocketConnection.java:872) at com.google.net.eventmanager.AbstractFutureTask $ Sync.innerRun (AbstractFutureTask.java:260) at com.google.net .eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager.EventManagerImpl.runTask (EventManagerImpl.java:576) at com.google.net.eventmanager.EventManagerImpl.internalRunWorkerLoopager799 ) at com.google.net.eventmanager.EventManagerImpl.runWorkerLoop (EventManagerImpl.java:878) at com.google.net.eventmanager.WorkerThreadInfo.runWorkerLoop (WorkerThreadInfo.java:134) at com.google.net.eManmanager.Event WorkerThread.run (EventManagerImpl.java:1833)40) at com.google.net.async3.SocketConnection $ NetworkReadHandlerImpl.run (SocketConnection.java:872) at com.google.net.eventmanager.AbstractFutureTask $ Sync.innerRun (AbstractFutureTask.java:260) at com.google.net .eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager.EventManagerImpl.runTask (EventManagerImpl.java:576) at com.google.net.eventmanager.EventManagerImpl.internalRunWorkerLoopager799 ) at com.google.net.eventmanager.EventManagerImpl.runWorkerLoop (EventManagerImpl.java:878) at com.google.net.eventmanager.WorkerThreadInfo.runWorkerLoop (WorkerThreadInfo.java:134) at com.google.netManmanImager.Event WorkerThread.run (EventManagerImpl.java:1833)872) at com.google.net.eventmanager.AbstractFutureTask $ Sync.innerRun (AbstractFutureTask.java:260) at com.google.net.eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager .EventManagerImpl.runTask (EventManagerImpl.java:576) at com.google.net.eventmanager.EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerImpl:runWorkerLoopager8 com.google.net.eventmanager.WorkerThreadInfo.runWorkerLoop (WorkerThreadInfo.java:134) at com.google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)872) at com.google.net.eventmanager.AbstractFutureTask $ Sync.innerRun (AbstractFutureTask.java:260) at com.google.net.eventmanager.AbstractFutureTask.run (AbstractFutureTask.java:121) at com.google.net.eventmanager .EventManagerImpl.runTask (EventManagerImpl.java:576) at com.google.net.eventmanager.EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerImpl:runWorkerLoop8 com.google.net.eventmanager.WorkerThreadInfo.runWorkerLoop (WorkerThreadInfo.java:134) at com.google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)net.eventmanager.EventManagerImpl.runTask (EventManagerImpl.java"76) at com.google.net.eventmanager.EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerManpl.ropunWorkager 878) at com.google.net.eventmanager.WorkerThreadInfo.runWorkerLoop (WorkerThreadInfo.java:134) at com.google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)net.eventmanager.EventManagerImpl.runTask (EventManagerImpl.java"76) at com.google.net.eventmanager.EventManagerImpl.internalRunWorkerLoop (EventManagerImpl.java:997) at com.google.net.eventmanager.EventManagerManpl.ropunWorkager 878) at com.google.net.eventmanager.WorkerThreadInfo.runWorkerLoop (WorkerThreadInfo.java:134) at com.google.net.eventmanager.EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)EventManagerImpl $ WorkerThread.run (EventManagerImpl.java:1833)

The ia code is as follows

    FileService fileService = FileServiceFactory.getFileService();
    GSFileOptionsBuilder optionsBuilder = new GSFileOptionsBuilder()
      .setBucket("mybucket")
      .setKey(key)
      .setMimeType("text/html")
      .setAcl("public-read")
      .addUserMetadata("myfield1", "my field value");
    try {
        AppEngineFile writableFile = fileService.createNewGSFile(optionsBuilder.build());
        // Open a channel for writing
        boolean lockForWrite = false;
        FileWriteChannel writeChannel = fileService.openWriteChannel(writableFile, lockForWrite);
        PrintWriter out = new PrintWriter(Channels.newWriter(writeChannel, "UTF8"));
        out.println(value);
        out.close();
        writeChannel.closeFinally();
    } catch (IOException e) {
        // TODO Auto-generated catch block
    }

      

        
        
        
      

    

I am using App Engine SDK 1.6.4

thank