NDB ImportError!

[Waleed Abdulla]

Hi all,

    I'm getting random import errors from time to time. They start on one of the instances, and then that instance keeps generating those errors until I shut it down. 

    I tried putting a _ah/warmup request, and in that request I do the import:

 from google.appengine.ext import ndb

   But that doesn't seem to solve the problem. What am I missing? I'm including the stack trace below.

Thanks

Waleed

----

2012-09-24 13:28:32.968 /panorama/blogger?&stream_suffix=__blogger&last_visit_date=1348495705&view=manage&offset=0&limit=5&parent_page_name=panorama 500 291ms 0kb Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 AlexaToolbar/alxf-2.15

80.87.92.2 - - [24/Sep/2012:13:28:32 -0700] "GET /panorama/blogger?&stream_suffix=__blogger&last_visit_date=1348495705&view=manage&offset=0&limit=5&parent_page_name=panorama HTTP/1.1" 500 0 "http://www.networkedblogs.com/panorama" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 AlexaToolbar/alxf-2.15" "www.networkedblogs.com" ms=291 cpu_ms=238 instance=00c61b117c7c127a4e5e1415265fc670470c

E 2012-09-24 13:28:32.788

Traceback (most recent call last):

  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 195, in Handle

    handler = _config_handle.add_wsgi_middleware(self._LoadHandler())

  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 250, in _LoadHandler

    __import__(cumulative_path)

  File "/base/data/home/apps/s~networkedblogshr/live.361951794551741701/website/panorama_page.py", line 9, in <module>

    from google.appengine.ext import ndb

  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/ndb/__init__.py", line 7, in <module>

    from tasklets import *

  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/ndb/tasklets.py", line 68, in <module>

    from .google_imports import apiproxy_stub_map

  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/ndb/google_imports.py", line 23, in <module>

    from google.appengine.api import prospective_search

  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/api/prospective_search/__init__.py", line 24, in <module>

    from prospective_search import *

  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/api/prospective_search/prospective_search.py", line 75, in <module>

    from google.appengine.api.prospective_search import error_pb

ImportError: cannot import name error_pb

[Anand Mistry]

Is a DeadlineExceededError exception raised on the first request to the instance?

[Waleed Abdulla]

The first request is the warmup request, and in my case it only has 3 lines to import ndb, db, and one other module. So it shouldn't take a long time at all. I can't verify right now since I already killed the instance, but I think a DeadlineExceededError is very unlikely in this case.

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