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Author:
{'name': 'Josef Ahmad', 'email': 'josef.ahmad@mongodb.com', 'username': 'josefahmad'}
Message: SERVER-61709 Introduce implicitly replicated namespaces
Implicitly replicated namespaces are internal namespaces that do not replicate
writes, with the exception of deletions, user-initiated direct writes and some
maintenance operations.
This patch lists config.system.preimages, config.images_collection,
config.transactions and config.changes.* as implicitly replicated namespaces,
and unifies and validates their semantics. It also special-cases some of the
config.transactions replication behaviour that is too specific to be generalised.
Branch: master
https://github.com/mongodb/mongo/commit/5a1dbe698bf88ef3f0ce2348c705d6a042c32011
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