Hi Peter. Since no errors were logged, It's possible that the errors weren't
directly caused by your application but were instead returned by the Google
front-end (GFE) that received your request. Hopefully these are very rare --
do you have a feeling for how often the 500s occur? If you reply with your
application ID, I may be able to look into this for you after the upcoming
holiday.
- Jason
On Tue, Dec 22, 2009 at 9:29 AM, peterk wrote:
> Hey all,
>
> Not sure if this is 'normal' but over the last couple of days or so
> I've seen increasing reports of 500 server errors on requests that
> normally are served fine. Some users have noted them too.
>
> But somewhat stranger still is that I can't debug these errors because
> they don't show up under the error log. They appear in the request log
> with a status code of 500 but no info about the error. They do not
> appear when I filter just for errors.
>
> An increasing number of my errors that have shown up in the error log
> lately have referred to Datastore Timeouts. For example my most recent
> error has these load characteristics:
>
> 500 4085ms 37cpu_ms 12api_cpu_ms
>
> With this error class: 'google.appengine.api.datastore_errors.Timeout'>:
>
> I hadn't really seen these problems before. My site isn't a high
> traffic one, but traffic has been increasing lately.
>
> What can I do to track down the cause of this kind of behaviour? Any
> advice is appreciated :)
>
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