Hello. I'm having trouble reading an exception log on my app. Quick background: - request was made by taskqueue - request creates several dozen tasklets that have this code path: (module/function names simplified):
mycode3.py:234 myFunc3() --> mycode2.py:64 myFunc2() --> mycode1.py:37 myFunc1 myFunc1 is yielding on async urlfetch; line 37 is the @ndb.tasklet decorator - taskqueue was configured to re-try 2 more times, which it did, each failing in exactly the same way Actual log: 2012-10-29 08:36:59.649 initial generator myFunc1(mycode1.py:37) raised RuntimeError(maximum recursion depth exceeded) W 2012-10-29 08:36:59.654 initial generator myFunc1(mycode1.py:37) raised RuntimeError(maximum recursion depth exceeded) W 2012-10-29 08:36:59.655 suspended generator myFunc2(mycode2.py:64) raised RuntimeError(maximum recursion depth exceeded) W 2012-10-29 08:36:59.665 initial generator myFunc1(mycode1.py:37) raised RuntimeError(maximum recursion depth exceeded) W 2012-10-29 08:36:59.669 initial generator myFunc1(mycode1.py:37) raised RuntimeError(maximum recursion depth exceeded) W 2012-10-29 08:36:59.670 suspended generator myFunc2(mycode2.py:64) raised RuntimeError(maximum recursion depth exceeded) W 2012-10-29 08:36:59.674 initial generator myFunc1(mycode1.py:37) raised RuntimeError(maximum recursion depth exceeded) W 2012-10-29 08:36:59.674 suspended generator myFunc2(mycode2.py:64) raised RuntimeError(maximum recursion depth exceeded) W 2012-10-29 08:37:00.658 suspended generator myFunc3(mycode3:234) raised RuntimeError(maximum recursion depth exceeded) E 2012-10-29 08:37:04.055 Exception: Deadlock waiting for <Future b36ce4ec0b0cf118 created by __call__(_webapp25.py:712) for tasklet flush(context.py:239); pending> Traceback (most recent call last): File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/_webapp25.py", line 712, in __call__ handler.post(*groups) File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/ndb/tasklets.py", line 1050, in add_context_wrapper ctx.flush().check_success() File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/ndb/tasklets.py", line 322, in check_success raise self._exception.__class__, self._exception, self._traceback RuntimeError: Deadlock waiting for <Future b36ce4ec0b0cf118 created by __call__(_webapp25.py:712) for tasklet flush(context.py:239); pending> E 2012-10-29 08:37:04.086 Traceback (most recent call last): E 2012-10-29 08:37:04.086 File "/base/python_runtime/python_lib/versions/1/google/appengine/api/app_logging.py", line 98, in emit E 2012-10-29 08:37:04.086 Traceback (most recent call last): E 2012-10-29 08:37:04.086 File "/base/python_runtime/python_lib/versions/1/google/appengine/api/app_logging.py", line 91, in emit E 2012-10-29 08:37:04.086 Traceback (most recent call last): E 2012-10-29 08:37:04.086 File "/base/python_runtime/python_lib/versions/1/google/appengine/api/app_logging.py", line 98, in emit E 2012-10-29 08:37:04.086 Traceback (most recent call last): E 2012-10-29 08:37:04.086 File "/base/python_runtime/python_lib/versions/1/google/appengine/api/app_logging.py", line 91, in emit E 2012-10-29 08:37:04.086 Traceback (most recent call last): E 2012-10-29 08:37:04.086 File "/base/python_runtime/python_lib/versions/1/google/appengine/api/app_logging.py", line 98, in emit The warnings for the generators would appear to be from 9 separate, otherwise unrelated tasklets that are all executing concurrently and all happen to be at different points in the code path. Is that correct? The recursion depth error seems to come from the app_logging. But is that the underlying cause, or the symptom of the failure? If the latter, how do I narrow what got me into this situation? Any help much appreciated. -ckhan -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/nW7Vd9mOxycJ. 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.