[google-appengine] Re: Random HTTP 500 errors
Hey , why not remove all try-except block and set debug=False in WSGIApplication, Then Google will log the error for you . On 8月31日, 下午11时42分, vp vivpu...@gmail.com wrote: Can anyone from Google give me an update on this issue. Right now my app is hovering at 1 Request/Second with an error rate of .5 Errors/ Second. As i have mentioned earlier, 99% of these errors clearly say ...500 10096ms 0cpu_ms 0kb..., which from what i can understand shows the request never gets to the actual request handler code. Thanks -V --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
One of the new features of today's release is that if you expand the logs for 500s in the admin console, you should see the reason. On Sep 3, 6:00 pm, GIMME ba...@gimme.org wrote: Hey , why not remove all try-except block and set debug=False in WSGIApplication, Then Google will log the error for you . On 8月31日, 下午11时42分, vp vivpu...@gmail.com wrote: Can anyone from Google give me an update on this issue. Right now my app is hovering at 1 Request/Second with an error rate of .5 Errors/ Second. As i have mentioned earlier, 99% of these errors clearly say ...500 10096ms 0cpu_ms 0kb..., which from what i can understand shows the request never gets to the actual request handler code. Thanks -V --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Yes saw that. Nick had already contacted me via email about the same. Thanks --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Can anyone from Google give me an update on this issue. Right now my app is hovering at 1 Request/Second with an error rate of .5 Errors/ Second. As i have mentioned earlier, 99% of these errors clearly say ...500 10096ms 0cpu_ms 0kb..., which from what i can understand shows the request never gets to the actual request handler code. Thanks -V --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Right now almost 50% of pages in my app just fail to load. Here are the stats from my app http://tmpimages.s3.amazonaws.com/app_errors.jpg If i click on each error link, it gives a picture similar to: http://tmpimages.s3.amazonaws.com/request_log_1.jpg As you can see, for reach request that fails with HTTP 500, the CPU usage is 0cpu_ms. This 0 cpu usage count clearly shows that requests are not hitting the app, instead getting lost somewhere on the appengine app server. I think Google AppEngine team really needs to give answers here as to why an app will give errors 50% of the time. I have been already updating this thread for 1 month and 2 days, without any real solution for this problem. -V --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Nick, did you get a chance to look into my email? Let me know if i can add any additional debugging somewhere... Thanks --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Hi vp, We really need more details about your code in order to provide any useful feedback. Empty responses are often caused by leaving this stanza off your request handler script: if __name__ == __main__: main() -Nick Johnson On Wed, Aug 19, 2009 at 6:23 PM, vp vivpu...@gmail.com wrote: Since i am not able to find any real issues with my code, i want to check with all appengine developers if their apps also throw up random HTTP 500 - Internal Server Error. In my case this is happening mostly where front-end template related code is involved. To reiterate the issue, quite a few times, when a user accesses the site via browser(FF, IE, Chrome, Safari) the page fails to load. However if user refreshes, the same page loads just fine. If i look at the logs, there are no mentions in the Error log. In the Request log, only thing found is information about the request, but no errors. Also, for almost all these pages, they serve content from memcache, which means datastore calls are kept to minimum. If anyone else has seen these kind of errors, please let me know if you found a workaround. Thanks -- Nick Johnson, Developer Programs Engineer, App Engine --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Nick, i sent you an email(your first_name.last_n...@google.com) with some code. Let me know if you got it. Thanks --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Since i am not able to find any real issues with my code, i want to check with all appengine developers if their apps also throw up random HTTP 500 - Internal Server Error. In my case this is happening mostly where front-end template related code is involved. To reiterate the issue, quite a few times, when a user accesses the site via browser(FF, IE, Chrome, Safari) the page fails to load. However if user refreshes, the same page loads just fine. If i look at the logs, there are no mentions in the Error log. In the Request log, only thing found is information about the request, but no errors. Also, for almost all these pages, they serve content from memcache, which means datastore calls are kept to minimum. If anyone else has seen these kind of errors, please let me know if you found a workaround. Thanks --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
There were loads of these yesterday during the outage. The only times I've ever had Internal Server Errrors are: - when GAE was having an outage - when I had a syntax error in my code - when I added a google apps account that matched my existing google account So unless you were seeing these during an outage, I don't think my experience matches yours. You can see the outage data in great detail here: http://code.google.com/status/appengine Click where it says Normal and you get a day-by-day rundown. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Joshua, Thanks for your response. I see issues even when GAE is not reporting an outage. In one instance, all i have setup is a redirect from one page to another another. And quite a few times that redirect just fails. -V --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
It's been quite a few days but 500 errors still keep showing up. To
track down those errors, i have set debugging at each and every point
of my code, but none of the debug points are hit. Instead i think the
request is getting lost at the very start itself. Below is my setup
imports
class ClassNameTmp(webapp.RequestHandler):
def get(self):
logging.info(self.__class__.__name__+'. Page load point 1')
try:
logging.info(self.__class__.__name__+'. Page load point
2')
except DeadlineExceededError:
logging.critical(self.__class__.__name__+'. Script
DeadlineExceededError Error')
self.redirect(/error)
return
def main():
application = webapp.WSGIApplication([('/classnametmp',
ClassNameTmp)],
debug=True)
run_wsgi_app(application)
if __name__ == __main__:
main()
When the app hits the 500 error, i don't even see the message from
logging.info(self.__class__.__name__+'. Page load point 1') in the
logs.
Anyone, any idea as to what might be going on here?
Thanks
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[google-appengine] Re: Random HTTP 500 errors
For a moment i thought this might be a DNS issue since i am on custom domain. But since the logs show a HTTP 500, it clearly shows AppEngine did see the request. It's just that the request gets lost from that point on. Right now, almost 10-20 percent of all requests are ending with HTTP 500. That is way beyond my comfort limit. And this issue is happening even on pages that are mostly memcached. Which means almost no datastore calls. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Hi, what is your app ID? I'm guessing that the 500 error is perhaps related to a different exception, since it looks like the code that you shared earlier will only handle a deadline exceeded error. Cheers, Jeff On Fri, Aug 14, 2009 at 9:34 AM, vp vivpu...@gmail.com wrote: For a moment i thought this might be a DNS issue since i am on custom domain. But since the logs show a HTTP 500, it clearly shows AppEngine did see the request. It's just that the request gets lost from that point on. Right now, almost 10-20 percent of all requests are ending with HTTP 500. That is way beyond my comfort limit. And this issue is happening even on pages that are mostly memcached. Which means almost no datastore calls. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
[google-appengine] Re: Random HTTP 500 errors
Jeff, Thanks for your reply. That was a good catch. I have now added the following: except Exception, e: logging.critical(self.__class__.__name__+'. Error: '+str (e)) self.redirect(/error) return Let's see if that catches the error I will email you the app id Thanks --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~--~~~~--~~--~--~---
