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POGoogle python map-reduce library returning a NULL context
 

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  1. POGoogle python map-reduce library returning a NULL context
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    <p>In my mapper, the context is being returned as NULL</p> <pre><code>class DeleteOldObservationsMapper(object): """Mapper for deleting old observations.""" def __init__(self): logging.info('DeleteOldObservationsMapper init') ctx = mapreduce.context.get() when = ctx.mapreduce_spec.mapper.params.get('before_timestamp_seconds') assert when self.before_datetime = datetime.datetime.utcfromtimestamp(when) logging.info('before_datetime %s', self.before_datetime) </code></pre> <p>Here is the error trace:</p> <pre><code>ERROR 2013-05-24 16:03:38,662 webapp2.py:1552] 'NoneType' object has no attribute 'mapreduce_spec' Traceback (most recent call last): File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1535, in __call__ rv = self.handle_exception(request, response, e) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1529, in __call__ rv = self.router.dispatch(request, response) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1278, in default_dispatcher return route.handler_adapter(request, response) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1102, in __call__ return handler.dispatch() File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 572, in dispatch return self.handle_exception(e, self.app.debug) File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 570, in dispatch return method(*args, **kwargs) File "/Users/leoromanovsky/code/adapt/server/mapreduce/base_handler.py", line 66, in post self.handle() File "/Users/leoromanovsky/code/adapt/server/mapreduce/handlers.py", line 320, in handle tstate = model.TransientShardState.from_request(self.request) File "/Users/leoromanovsky/code/adapt/server/mapreduce/model.py", line 993, in from_request handler = mapreduce_spec.mapper.handler File "/Users/leoromanovsky/code/adapt/server/mapreduce/model.py", line 618, in get_handler return util.handler_for_name(self.handler_spec) File "/Users/leoromanovsky/code/adapt/server/mapreduce/util.py", line 149, in handler_for_name return getattr(resolved_name.im_class(), resolved_name.__name__) File "/Users/leoromanovsky/code/adapt/server/jobs.py", line 22, in __init__ when = ctx.mapreduce_spec.mapper.params.get('before_timestamp_seconds') AttributeError: 'NoneType' object has no attribute 'mapreduce_spec' </code></pre>
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    1. USLeo Romanovsky
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      1. POGoogle python map-reduce library returning a NULL context
      1. USAnnie
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    1. CODid you ever find a solution to this?
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      1. USAnnie
    2. COAnnie, leo, is the issue you're seeing this: https://code.google.com/p/appengine-mapreduce/issues/detail?id=127
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      1. POGoogle python map-reduce library returning a NULL context
      1. USRob Curtis
    3. COBert -- I am seeing that same callstack, but I have "threadsafe: false" in my app.yaml, so I don't believe I am running in threadsafe mode.
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