I have one more useCase to consider from our ecosystem.
We dump numpy arrays into a MongoDB using GridFS for subsequent visualization,
some snippets:
'''Python
with BytesIO() as BIO:
np.save(BIO, numpy_array)
serialized_A = BIO.getvalue()
filehandle_id = self.representations_files.put(serialized_A)
'''
and then restore them in the other application:
'''Python
numpy_array = np.load(BytesIO(serializedA))
'''
For us this is for development work only and I am less concerned about having
mixed versions in my database, but in principle that is a scenario. But it
seems to me that for this to work the reading application needs to be migrated
to version 2 and temporarily extended with the NumpyUnpickler before the
writing application is migrated. Or they need to be migrated at the same time.
Is that correct?
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