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Assigned Teams:

Catalog and Routing
Sprint:
CAR Team 2024-07-22, CAR Team 2024-08-05, CAR Team 2024-08-19, CAR Team 2024-09-02

Create a new aggregation stage called $listCollections to dump the list of collections in a sharded cluster.

> db.getSiblingDB("admin").aggregate([{$listCollections: {}}])

This is the list of fields that will be reported per every collection:

ns	string	The namespace of the collection.
db	string	The database of the collection.
uuid	UUID	The UUID of the collection.
type	string	Possible values: “collection”/”view”/”timeseries” (same output as listCollections)
idIndex	BSON object	(same output as listCollections)
options	BSON object	(same output as listCollections)
info	BSON object	(same output as listCollections)
sharded	boolean	Specifies if the collection is sharded or unsharded.
shardKey	(opt) BSON object	The shard key of the collection. Only present if the collection is sharded.

is depended on by

SERVER-92960 Enable the new $listCollections agg stage on a replicaset/standalone cluster

SERVER-93383 Test readOnly parameter on listCollections and $listCollections

SERVER-92961 Extend the response of $listCollections with additional fields

SERVER-93136 Set timeseries options to the timeseries view docs got from $listCollections