Hi,

I found MemcacheServiceException at 2011/07/28 10:57 AM(PDT).
What is this exception?
I didn't write 1MB over data.
And I could not found my class code line in stack trace.
google app engine bug?

In Addition, three thousand task queues retried after this exception
is happened.
Normally task queue retry after exception happen in task queue.
But many task queues were running.
Because of I received many error mail and mail quotas was over.

Please help us.
Thank you.

stack trace:
org.apache.jasper.runtime.JspFactoryImpl internalGetPageContext:
Exception initializing page context
com.google.appengine.api.memcache.MemcacheServiceException: Memcache
put: Error setting single item (_ahsxvOfW0bieFkW1N2vYQoYnA)
        at
com.google.appengine.api.memcache.MemcacheServiceImpl.doPut(MemcacheServiceImpl.java:
427)
        at
com.google.appengine.api.memcache.MemcacheServiceImpl.put(MemcacheServiceImpl.java:
443)
        at
com.google.appengine.api.memcache.MemcacheServiceImpl.put(MemcacheServiceImpl.java:
470)
        at
com.google.apphosting.runtime.jetty.MemcacheSessionStore.saveSession(MemcacheSessionStore.java:
39)
        at
com.google.apphosting.runtime.jetty.SessionManager.createSession(SessionManager.java:
342)
        at com.google.apphosting.runtime.jetty.SessionManager
$AppEngineSession.<init>(SessionManager.java:125)
        at
com.google.apphosting.runtime.jetty.SessionManager.newSession(SessionManager.java:
273)
        at
com.google.apphosting.runtime.jetty.SessionManager.newSession(SessionManager.java:
43)
        at
org.mortbay.jetty.servlet.AbstractSessionManager.newHttpSession(AbstractSessionManager.java:
413)
        at org.mortbay.jetty.Request.getSession(Request.java:1242)
        at org.mortbay.jetty.Request.getSession(Request.java:1214)
        at
org.apache.jasper.runtime.PageContextImpl._initialize(PageContextImpl.java:
146)
        at
org.apache.jasper.runtime.PageContextImpl.initialize(PageContextImpl.java:
124)
        at
org.apache.jasper.runtime.JspFactoryImpl.internalGetPageContext(JspFactoryImpl.java:
107)
        at org.apache.jasper.runtime.JspFactoryImpl.access
$000(JspFactoryImpl.java:40)
        at org.apache.jasper.runtime.JspFactoryImpl
$PrivilegedGetPageContext.run(JspFactoryImpl.java:149)
        at
com.google.apphosting.runtime.security.shared.intercept.java.security.AccessController_.doPrivileged(AccessController_.java:
34)
        at
org.apache.jasper.runtime.JspFactoryImpl.getPageContext(JspFactoryImpl.java:
61)
        at org.apache.jsp.error._500_jsp._jspService(_500_jsp.java:44)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        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.handle(ServletHandler.java:
390)
        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 org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:327)
        at org.mortbay.jetty.servlet.Dispatcher.error(Dispatcher.java:135)
        at com.google.apphosting.runtime.jetty.AppVersionHandlerMap
$NullErrorHandler.mayHandleByErrorPage(AppVersionHandlerMap.java:403)
        at com.google.apphosting.runtime.jetty.AppVersionHandlerMap
$NullErrorHandler.handle(AppVersionHandlerMap.java:335)
        at org.mortbay.jetty.Response.sendError(Response.java:274)
        at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
475)
        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
$RequestHandler.headerComplete(HttpConnection.java:923)
        at
com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:
76)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
        at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
135)
        at
com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:
260)
        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$2.handleRequest(RuntimePb.java:9805)
        at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
422)
        at com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java:
579)
        at com.google.tracing.TraceContext$TraceContextRunnable
$1.run(TraceContext.java:449)
        at com.google.tracing.TraceContext.runInContext(TraceContext.java:
689)
        at com.google.tracing.TraceContext
$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:
327)
        at com.google.tracing.TraceContext
$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:
319)
        at com.google.tracing.TraceContext
$TraceContextRunnable.run(TraceContext.java:447)
        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)

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