Guys, This is likely happening because your requests are taking on the order of seconds to execute. Additional instances are not being added to your App Engine apps, so incoming requests are being placed into a pending queue and never being able to execute, causing them to abort. You will need to reduce your user facing requests to under 1000ms so that App Engine can add instances. You'll want to move slower operations to task queues.
-- Ikai Lan Developer Programs Engineer, Google App Engine Blogger: http://googleappengine.blogspot.com Reddit: http://www.reddit.com/r/appengine Twitter: http://twitter.com/app_engine On Wed, Oct 20, 2010 at 9:07 AM, TAKEUCHI POMU <[email protected]> wrote: > My app(appid: mb4sqjp) also have similar problem for these couple of > days... > > Sometimes it leaves message I've never seen. > > For the most part, log says > - "Request was aborted after waiting too long to attempt to service > your request. This may happen sporadically when the App Engine serving > cluster is under unexpectedly high or uneven load. If you see this > message frequently, please contact the App Engine team." > > I also found, > - "10-20 08:44AM 03.505 > A serious 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 should contact the App Engine team. (Error > code 203)" > > I saw this message for the first time, > - "Failed startup of context > com.google.apphosting.utils.jetty.runtimeappenginewebappcont...@831a91 > {/,/base/data/home/apps/mb4sqjp/xxx.345605032354519732} > com.google.apphosting.runtime.security.SystemFailureException: Unable > to get a resource > at > com.google.appengine.runtime.Request.process-75e3768d20b77cee(Request.java) > at java.lang.ClassLoader.loadClass(ClassLoader.java:268) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)" > > Other versions of my app also end with 500 very frequently. > > Thanks in advance, > Pomu > > 2010/10/20 Carlos Ble <[email protected]>: > > More info: > > > > 10-20 04:41AM 48.795 / 500 38679ms 919cpu_ms - > > (DeadeLineExceededError) > > > > Instances: > > > > Total number of instances Average QPS Average Latency > Average > > Memory > > 2 total 0.017 160.2 ms 35.4 MBytes > > Instances QPS Latency Memory > > 0.000 0.0 ms 39.6 MBytes > > 0.033 320.5 ms 31.2 MBytes > > > > > > On 20 oct, 12:40, Carlos Ble <[email protected]> wrote: > >> Hi, > >> We are facing several DeadlineExceededError since yesterday. Appid = > >> mavencharts > >> > >> 10-20 04:30AM 24.323 / 500 31863ms 1539cpu_ms > >> > >> At that time Average QPS was about 0.04 and there was 2 instances > >> running. > >> > >> Thanks > >> > >> On 18 oct, 12:03, Stepan <[email protected]> wrote: > >> > >> > Last 3-4 days my app has like 80% DeadlineExceededErro; app ID is > >> > "pixycity". That's sort of unacceptable. Please let us know what's > >> > happening. Thanks > >> > -stepan > >> > >> > > > > -- > > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > [email protected]<google-appengine%[email protected]> > . > > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > > > > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
