MongoDB error with pymongo>4: Unknown option j

[Cmurilochem]

This bug was discussed before in #836 and #845 but it seems that it still persists whenever instantiating pymongo.MongoClient in hyperopt/mongoexp.py with pymongo>4. In #836, it looks like a provisory solution was provided:

.... The parameter 'j' is never used. No Idea why pymongo.MongoClient in hyperopt/mongoexp.py is using it. However as it is passed as **kwargs I simply removed it. Looks usable so far pymongo/mongo_client.py:

But I suspect that this has never been implemented into main ? If not, please, could this be done ? Noticed that there is some discussions about the deprecation of the j option that should be replaced by journal when launching mongod. The problem here is that this error appears even without using the journal option in mongod.

Any clues?

Thanks Carlos

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