Hi Lior, Are you allocating a large amount of memory up front? When you start writing a response, a fixed-size heap allocation occurs to hold it. (Implementation detail). If you've exhausted most of your JVM's memory before this point, it won't have enough left over to allocate that buffer for your response.
On Tue, Feb 9, 2010 at 7:53 AM, Lior Harsat <[email protected]> wrote: > Hi , > > I am getting OutOfMemoryErrors. The stack trace always points to the > exact same place at the Jetty runtime. see stack trace below > has anyone experienced this? > These errors occur for the same flow in my code (sometime it succeeds > and sometime it get the OutOfMemoryError). this particular flow does > not return too much content (around 5KB). > If my app had a memory problem I would expect to get the > OutOfMemoryErrors all over the place, but, it only happens in one > flow. > please help. > > java.lang.OutOfMemoryError: Java heap space > at java.nio.HeapByteBuffer.<init>(Unknown Source) > at java.nio.ByteBuffer.allocate(Unknown Source) > at > > com.google.apphosting.runtime.jetty.RpcResponseGenerator.newBufferFromPool(RpcResponseGenerator.java: > 213) > at > > com.google.apphosting.runtime.jetty.RpcResponseGenerator.<init>(RpcResponseGenerator.java: > 39) > at > > com.google.apphosting.runtime.jetty.RpcConnection.<init>(RpcConnection.java: > 41) > at > > com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java: > 99) > 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) > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine-java%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. 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.
