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Type:
Bug
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Resolution: Works as Designed
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Priority:
Major - P3
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None
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Affects Version/s: 4.3.2
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Component/s: MapReduce
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None
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Query
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ALL
I noticed while working on PYTHON-2072 that mapReduce can no longer create a collection in a missing database:
$ python3.8 PYTHON-2072.py
Server version: 4.3.2-392-gd6cc8fa
Is mongos? True
mapReduce out to missing database:
{'ok': 0.0, 'errmsg': 'database missing not found', 'code': 26, 'codeName': 'NamespaceNotFound'}
mapReduce out to missing collection:
{'result': {'db': 'test', 'collection': 'missingcoll2'}, 'ok': 1.0}
$ python3.8 PYTHON-2072.py
Server version: 4.3.2-392-gd6cc8fa
Is mongos? False
mapReduce out to missing database:
{'result': {'db': 'missing', 'collection': 'missingcoll1'}, 'ok': 1.0}
mapReduce out to missing collection:
{'result': {'db': 'test', 'collection': 'missingcoll2'}, 'ok': 1.0}
On 4.2 mapReduce can create the output collection regardless of if the database exists.
- related to
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PYTHON-2072 MR in Agg: Remove in-line mapReduce execution statistics
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- Closed
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