I've been seeing a handful of these each day on my app. These are very small messages going only to 1 recipient. I could move mail sending out of the normal request flow (I think cron jobs are the only option right now for background processing, yes?) - is that the recommended remedy?
com.honkentuber.wordwise.Emailer sendTurnSummaryMessage: failed to send message for turn VALID: [VANE] com.google.apphosting.api.ApiProxy$ApiDeadlineExceededException: The API call mail.Send() took too long to respond and was cancelled. at com.google.apphosting.runtime.ApiProxyImpl.doSyncCall(ApiProxyImpl.java: 146) at com.google.apphosting.runtime.ApiProxyImpl.access $000(ApiProxyImpl.java:43) at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java: 104) at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java: 102) at java.security.AccessController.doPrivileged(Native Method) at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java: 102) at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java: 43) at com.google.appengine.tools.appstats.Recorder.makeSyncCall(Recorder.java: 225) at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:98) at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:48) at com.google.appengine.api.mail.MailServiceImpl.doSend(MailServiceImpl.java: 95) at com.google.appengine.api.mail.MailServiceImpl.send(MailServiceImpl.java: 32) at com.google.appengine.api.mail.stdimpl.GMTransport.sendMessage(GMTransport.java: 247) at javax.mail.Transport.send(Transport.java:95) at javax.mail.Transport.send(Transport.java:48) at com.honkentuber.wordwise.Emailer.sendTurnSummaryMessage(Emailer.java: 272) at com.honkentuber.wordwise.servlet.GameServlet.processRequest(GameServlet.java: 84) at com.honkentuber.wordwise.servlet.GameServlet.newJsonResponse(GameServlet.java: 190) at com.honkentuber.wordwise.servlet.WordwiseBaseServlet.newJsonResponse(WordwiseBaseServlet.java: 68) at com.honkentuber.Servlet.dispatchJson(Servlet.java:81) at com.honkentuber.Servlet.doIt(Servlet.java:51) at com.honkentuber.Servlet.doGet(Servlet.java:28) 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: 511) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1166) at com.google.appengine.tools.appstats.AppstatsFilter.doFilter(AppstatsFilter.java: 92) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java: 97) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java: 35) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: 43) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 388) at org.mortbay.jetty.security.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.handle(AppVersionHandlerMap.java: 238) 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 $RequestHandler.headerComplete(HttpConnection.java:923) at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java: 76) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java: 135) at com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java: 250) at com.google.apphosting.base.RuntimePb$EvaluationRuntime $6.handleBlockingRequest(RuntimePb.java:5838) at com.google.apphosting.base.RuntimePb$EvaluationRuntime $6.handleBlockingRequest(RuntimePb.java:5836) at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java: 24) at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java: 398) at com.google.net.rpc.impl.Server$2.run(Server.java:852) at com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java: 56) at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java: 576) at com.google.net.rpc.impl.Server.startRpc(Server.java:807) at com.google.net.rpc.impl.Server.processRequest(Server.java:369) at com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java: 442) 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: 831) at com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java: 207) at com.google.net.async.EventDispatcher.loop(EventDispatcher.java: 103) at com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java: 251) at com.google.apphosting.runtime.JavaRuntime $RpcRunnable.run(JavaRuntime.java:413) 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. 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