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Mongos now converts writeConcern of all metadata operations (create/drop/dropDatabase, etc.) to w: majority, per a comment in SERVER-33317. This should be documented.
Scope of changes:
- 4.0

- 4.0-compatibility

- sharded-cluster-query-router

- movePrimary

- create / db.createCollection

- drop / db.collection.drop

- dropDatabase cmd only as helper does not take write concern

- shardCollection / sh.shardCollection

- enableSharding

- addShard

- removeShard
- remove-shards-from-cluster.txt

Impact to other docs outside of this product:
none
MVP:
Resources:
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