Info

Currently, a collMod oplog entry with a nonexistent UUID will be applied to an existing collection if the collection name of the oplog entry matches an existing collection name. This is due to the handling of collMods that are used to upgrade from 3.4 to 3.6 and add UUIDs to collections. This special handling should only occur for collMods that are for upgrade, i.e., empty collMods.

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xgen-internal-githook commented on Thu, 17 Aug 2017 18:36:37 +0000: Author: {'username': 'mvankeulen94', 'email': 'maria@mongodb.com', 'name': 'Maria van Keulen'} Message: SERVER-30665 Only accept nonexistent UUIDs for UUID upgrade collMods Branch: master https://github.com/mongodb/mongo/commit/c1aaff64cdf88d3ff2f0220033964fa6fcdb5513

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