I've discovered my issue - Apache Wicket. Wicket has it's own Session that stores data in an ISessionStore. Normally, this is backed by a Disk, but can be backed with an HttpSession if set properly. The trick is that it stores a lot of state with each page, which I can change now that I know the issue - prior to this point, my pages were simple HTML.
My new question is this: when does the HttpSession become persisted? Are setAttribute(), getAttribute() calls to HttpSession equivalent to datastore queries? In that case, would I see a performance improvement using MemCache with the HttpSession as a fallback? Thanks! Jake On Feb 10, 11:23 am, Don Schwarz <schwa...@google.com> wrote: > How much data are you storing in your session? Currently, the serialized > representation of a sessions contents must be < the 1MB entity limit. > > On Tue, Feb 9, 2010 at 12:46 PM, Jake <jbrooko...@cast.org> wrote: > > Hello, > > > I'm getting the following error: > > > java.lang.IllegalArgumentException: string property _values is too > > long. It cannot exceed 1000000 characters. > > > The trick is, I'm not persisting any Blobs and certainly none called > > "_values". I do have one object with a Blob field, but I'm not > > persisting anything to that field to cause the above exception. Also, > > this is a new issue and that Blob has been in my application for > > awhile. All I'm doing is viewing pages that query the datastore. My > > admin panel doesn't show any quota issues. > > > My newest change is that I'm uploading a 350K XML file (a book), > > applying some XSLT translation using Saxon and storing the result in > > an application variable, and displaying certain chunks of that file > > depending on the clicked page. > > > I do have sessions enabled, which I fear is related, but I'm not sure > > how to resolve this. > > > Thanks in advance for any help! > > > Jake > > > /titlepage > > java.lang.IllegalArgumentException: string property _values is too > > long. It cannot exceed 1000000 characters. > > at > > > com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java: > > 33) > > at > > > com.google.appengine.api.datastore.DatastoreApiHelper.makeSyncCall(DatastoreApiHelper.java: > > 60) > > at com.google.appengine.api.datastore.DatastoreServiceImpl > > $2.run(DatastoreServiceImpl.java:163) > > at > > > com.google.appengine.api.datastore.TransactionRunner.runInTransaction(TransactionRunner.java: > > 30) > > at > > > com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java: > > 151) > > at > > > com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java: > > 131) > > at > > > com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java: > > 123) > > at com.google.apphosting.runtime.jetty.SessionManager > > $AppEngineSession.save(SessionManager.java:162) > > at > > > com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java: > > 41) > > 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 > > $6.handleBlockingRequest(RuntimePb.java:5485) > > at com.google.apphosting.base.RuntimePb$EvaluationRuntime > > $6.handleBlockingRequest(RuntimePb.java:5483) > > 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:837) > > 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:792) > > at com.google.net.rpc.impl.Server.processRequest(Server.java:367) > > 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: > > 474) > > at > > > com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java: > > 774) > > 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 > > google-appengine-j...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > > . > > 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. 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