java.util.ConcurrentModificationException: too much contention on these datastore entities. please try again.

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via GitHub by damithc
, 1 year ago
too much contention on these datastore entities. please try again.
via GitHub by damithc
, 1 year ago
too much contention on these datastore entities. please try again.
via GitHub by rahulsom
, 1 year ago
too much contention on these datastore entities. please try again.
via Google Groups by Ryan Taylor, 2 years ago
too much contention on these datastore entities. please try again.
via Google Groups by Ken Bowen, 2 years ago
too much contention on these datastore entities. please try again.
via Google Groups by FastGeert, 2 years ago
too much contention on these datastore entities. please try again.
java.util.ConcurrentModificationException: too much contention on these datastore entities. please try again.
at com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:60)
at com.google.appengine.api.datastore.DatastoreApiHelper$1.convertException(DatastoreApiHelper.java:137)
at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:108)
at com.google.appengine.api.datastore.Batcher$ReorderingMultiFuture.get(Batcher.java:132)
at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:92)
at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:92)
at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:92)
at com.google.appengine.api.datastore.FutureHelper.getInternal(FutureHelper.java:77)
at com.google.appengine.api.datastore.FutureHelper.quietGet(FutureHelper.java:37)
at com.google.apphosting.runtime.jetty.SessionManager.createSession(SessionManager.java:363)
at com.google.apphosting.runtime.jetty.SessionManager$AppEngineSession.(SessionManager.java:124)
at com.google.apphosting.runtime.jetty.SessionManager.newSession(SessionManager.java:282)
at com.google.apphosting.runtime.jetty.SessionManager.newSession(SessionManager.java:38)
at org.mortbay.jetty.servlet.AbstractSessionManager.newHttpSession(AbstractSessionManager.java:413)
at org.mortbay.jetty.Request.getSession(Request.java:1242)
at teammates.ui.controller.Action.initialiseAttributes(Action.java:91)
at teammates.ui.controller.Action.init(Action.java:81)
at teammates.ui.controller.ActionFactory.getAction(ActionFactory.java:144)
at teammates.ui.controller.ControllerServlet.doPost(ControllerServlet.java:57)
at teammates.ui.controller.ControllerServlet.doGet(ControllerServlet.java:38)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at teammates.storage.datastore.DatastoreFilter.doFilter(DatastoreFilter.java:28)
at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:37)
at org.mortbay.jetty.servlet.ServletHandler$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 com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:260)
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 com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:78)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:148)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:437)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:444)
at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:256)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:308)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:300)
at java.lang.Thread.run(Thread.java:745)

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