Hi Mark,
I'm testing this on my dev app, which has no load at all, so it's not
the simultaneous requests limit. Although the same problem happens on the
production app for that specific request. It's a reproducible problem. This
is what I see in the logs:
03-02 04:42PM 08.454 /api/pshb?bid=363429&source=ppp&hub=http%3A%2F%
2Fdev.networkedblogs.com%2F&topic=http%3A%2F%
2Fchaoswrappedinchocolate-coveredgrins.blogspot.com%2Ffeeds%2Fposts%2Fdefault&sig=6aed0a71ee0d7573fe6fc37a7f40ac6f5f27071f
500 40097ms 8cpu_ms 8api_cpu_ms 0kb NetworkedBlogs,gzip(gfe),gzip(gfe)
173.203.209.168 - - [02/Mar/2010:16:42:48 -0800] "POST
/api/pshb?bid=363429&source=ppp&hub=http%3A%2F%2Fdev.networkedblogs.com
%2F&topic=http%3A%2F%2Fchaoswrappedinchocolate-coveredgrins.blogspot.com%2Ffeeds%2Fposts%2Fdefault&sig=6aed0a71ee0d7573fe6fc37f7f40ac6f5f27071f
HTTP/1.1" 500 0 - "NetworkedBlogs,gzip(gfe),gzip(gfe)"
I have a logging.info() statement right at the start of the app as
follows:
def main():
logging.info("processing request")
wsgiref.handlers.CGIHandler().run(application)
But I don't see that info message in the log, so I'm taking that to mean
that the execution is not hitting my app. I don't see any other details in
the log other than what I lited above. The size of the POST body I'm sending
is 139836 bytes, which is not that big.
Any other ideas?
Regards,
Waleed
On Tue, Mar 2, 2010 at 8:29 AM, Marc Provost <mprov...@gmail.com> wrote:
> Hi Waleed,
>
> You are not seeing any errors/warnings in the logs? There are a few
> possibilities here.
>
> If the request hits your app:
>
> * You could be hitting the 30 seconds limit (maybe because the input
> is too large or something). You should see an error in the logs.
> * Your code could also be raising an exception that you do not catch.
> You should see an error in the logs.
> * It is also possible that the return status of the request is set to
> 500 somehow. In this case, if your application could silently catch
> the exception without logging anything. But you should be able to
> debug it by logging info messages in your request handler.
>
> If your request does not hit your app:
>
> * You could be hitting the simultaneous requests limit. That's a
> warning in the logs, but it shouldn't be reproducible every time.
>
> Hope it helps,
> Marc
>
> On Mar 2, 3:09 am, Waleed <wal...@ninua.com> wrote:
> > I'm getting this error for some requests:
> >
> > The server encountered an error and could not complete your
> > request.<p>If the problem persists, please <A HREF="http://
> > code.google.com/appengine/community.html">report</A> your problem and
> > mention this error message and the query that caused it.
> >
> > It's repeatable and the error happens every time for that specific
> > request I'm sending. I tested with another AE app and I get the same
> > problem. The request doesn't seem to be hitting my app, but fails
> > before that, so I can't do anything about it. When I submit the same
> > request with different data in the POST body, it goes through and
> > works well.
> >
> > My request is a simple POST with a blog feed in the body of the post.
> > Nothing particularly unique about it. And as I mentioned earlier, it
> > works for most feeds, except for a few where it breaks 100% of the
> > time.
> >
> > How can I debug this? Can anyone shed some light? App id is:
> > networkedblogs
>
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