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Type: Task
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Resolution: Done
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Affects Version/s: None
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Component/s: None
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Labels:None
After debugging MONGOID-2761, I realize that has_and_belongs_to_many were querying the DB twice with the same selector.
When there was a many to many, and the target was not loaded and target.first was called, _unloaded was calling the db twice in order to load.