# Query Sampling

Starts, returns, and stops query sampling on one namespace of one cluster. Sampled queries feed the shard key analysis for the namespace.

## Operations

- [Create Query Sampling for One Namespace](https://www.mongodb.com/docs/api/doc/atlas-admin-api-v2/operation/operation-creategroupclusterquerysampling.md)

- [Return Query Sampling State for One Namespace](https://www.mongodb.com/docs/api/doc/atlas-admin-api-v2/operation/operation-getgroupclusterquerysampling.md)

- [Remove Query Sampling from One Namespace](https://www.mongodb.com/docs/api/doc/atlas-admin-api-v2/operation/operation-deletegroupclusterquerysampling.md)


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