Error Code 104の原因、対策について

[鈴木 陽]

初めまして、いつもお世話になっています

鈴木陽と申します。

稼働中のGAEでdatastoreのcsvファイルを出力しようとすると

次のようなエラー(エラーコード104)が発生する事象に陥ってます。

A problem was encountered with the process that handled this request, causing it to exit. This is likely to cause a new process to be used for the next request to your application. If you see this message frequently, you may be throwing exceptions during the initialization of your application. (Error code 104)

どなたかエラー104発生の原因、その対策をご教授願えますでしょうか。

よろしくおねがいいたします。

[Takashi Matsuo]

ログにあるように、loading request の最中に例外が出てエラーになっているのではないかと思います。

他に StackTrace のようなものは出ていませんか？

[鈴木 陽]

松尾さん

ご返答いただきありがとうございます。

以下のようなスタックトレースが出力されています。

com.google.apphosting.api.ApiProxy$CancelledException: The API call datastore_v3.Put() was explicitly cancelled.
	at com.google.apphosting.runtime.ApiProxyImpl$5.get(ApiProxyImpl.java:361)
	at com.google.apphosting.runtime.ApiProxyImpl$5.get(ApiProxyImpl.java:359)
	at com.google.appengine.tools.appstats.RecordingFuture.get(RecordingFuture.java:99)
	at com.google.appengine.tools.appstats.Recorder.processRecordingFuture(Recorder.java:418)
	at com.google.appengine.tools.appstats.Recorder.processAsyncRpc(Recorder.java:391)
	at com.google.appengine.tools.appstats.RecordingFuture.maybeRecordStats(RecordingFuture.java:131)
	at com.google.appengine.tools.appstats.RecordingFuture.get(RecordingFuture.java:101)
	at com.google.appengine.tools.appstats.RecordingFuture.get(RecordingFuture.java:20)
	at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:90)
	at com.google.appengine.api.datastore.FutureHelper$CumulativeAggregateFuture.get(FutureHelper.java:145)
	at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:90)
	at com.google.appengine.api.datastore.FutureHelper.getInternal(FutureHelper.java:72)
	at com.google.appengine.api.datastore.FutureHelper.quietGet(FutureHelper.java:33)
	at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:113)
	at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:110)
	at com.google.appengine.api.datastore.TransactionRunner.runInTransaction(TransactionRunner.java:31)
	at com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:110)
	at com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:94)
	at com.google.apphosting.runtime.jetty.DatastoreSessionStore.saveSession(DatastoreSessionStore.java:93)
	at com.google.apphosting.runtime.jetty.SessionManager$AppEngineSession.save(SessionManager.java:164)
	at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:41)
	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: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$RequestHandler.headerComplete(HttpConnection.java:923)
	at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:135)
	at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:477)
	at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
	at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
	at com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
	at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
	at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
	at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
	at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
	at java.lang.Thread.run(Thread.java:679)

cpuの使用時間も記載しておきます。タイムアウト的なものなのでしょうか。

　ms=59574 cpu_ms=154132 api_cpu_ms=146879 cpm_usd=4.281815 exit_code=104

2012年7月17日火曜日 21時41分40秒 UTC+9 Takashi Matsuo (Google):