Hi all,

I am running a task which iterates on Entities retrieved from a query 
performed with Objectify. For each entity I iterate on, I update some fields 
and then I save it to the datastore. If the task gets near 10 min I submit a 
new task with a cursor set to the last entity iterated on. When the task is 
submitted, it runs very well during about 50 sec and then the following 
exception is raised. I have no idea why I am getting this exception. 
However, I have notice that if I allows a maximum execution time of 25 
seconds approximately all works very well and no exception is raised.

Does the maximum execution time for a task en-queued into a queue is limited 
to 30 sec and not 10 min? 

java.lang.IllegalArgumentException: query not found
at 
com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:36)
at 
com.google.appengine.api.datastore.DatastoreApiHelper$1.convertException(DatastoreApiHelper.java:98)
at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:69)
at 
com.google.appengine.api.datastore.FutureHelper.getInternal(FutureHelper.java:71)
at 
com.google.appengine.api.datastore.FutureHelper.quietGet(FutureHelper.java:32)
at 
com.google.appengine.api.datastore.QueryResultsSourceImpl.loadMoreEntities(QueryResultsSourceImpl.java:69)
at 
com.google.appengine.api.datastore.QueryResultsSourceImpl.loadMoreEntities(QueryResultsSourceImpl.java:56)
at 
com.google.appengine.api.datastore.QueryResultIteratorImpl.ensureLoaded(QueryResultIteratorImpl.java:156)
at 
com.google.appengine.api.datastore.QueryResultIteratorImpl.hasNext(QueryResultIteratorImpl.java:65)
at 
com.googlecode.objectify.util.TranslatingIterator.hasNext(TranslatingIterator.java:29)
at com.mvnstore.backend.MavenPomParser.doPost(MavenPomParser.java:59)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at 
com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java: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:261)
at 
com.google.apphosting.base.RuntimePb$EvaluationRuntime$2.handleRequest(RuntimePb.java:9285)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:437)
at com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java:573)
at 
com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:448)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:688)
at 
com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:326)
at 
com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:318)
at 
com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:446)
at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)

Kind Regards,

Laurent

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