# Return Ranked Namespaces from One Host

**GET /api/atlas/v2/groups/{groupId}/processes/{processId}/collStats/namespaces**

Return the subset of namespaces from the given process ranked by highest total execution time (descending) within the given time window.


## Servers
- https://cloud.mongodb.com: https://cloud.mongodb.com ()


## Authentication methods
- Service accounts
- Digest auth


## Parameters

### Path parameters
- **groupId** (string)
  Unique 24-hexadecimal digit string that identifies your project. Use the [/groups](#tag/Projects/operation/listProjects) endpoint to retrieve all projects to which the authenticated user has access.

  **NOTE**: Groups and projects are synonymous terms. Your group id is the same as your project id. For existing groups, your group/project id remains the same. The resource and corresponding endpoints use the term groups.
- **processId** (string)
  Combination of hostname and IANA port that serves the MongoDB process. The host must be the hostname, fully qualified domain name (FQDN), or Internet Protocol address (IPv4 or IPv6) of the host that runs the MongoDB process (mongod or mongos). The port must be the IANA port on which the MongoDB process listens for requests.

### Query parameters
- **envelope** (boolean)
  Flag that indicates whether Application wraps the response in an `envelope` JSON object. Some API clients cannot access the HTTP response headers or status code. To remediate this, set envelope=true in the query. Endpoints that return a list of results use the results object as an envelope. Application adds the status parameter to the response body.
- **start** (string(date-time))
  Date and time when MongoDB Cloud begins reporting the metrics. This parameter expresses its value in the ISO 8601 timestamp format in UTC. Include this parameter when you do not set **period**.
- **end** (string(date-time))
  Date and time when MongoDB Cloud stops reporting the metrics. This parameter expresses its value in the ISO 8601 timestamp format in UTC. Include this parameter when you do not set **period**.
- **period** (string)
  Duration over which Atlas reports the metrics. This parameter expresses its value in the ISO 8601 duration format in UTC. Include this parameter when you do not set **start** and **end**.


## Responses
### 200
Succeeded

#### Body: application/vnd.atlas.2023-11-15+json (object)
- **groupId** (string)
  Unique 24-hexadecimal digit string that identifies the request project.
- **identifierId** (string)
  Unique 24-hexadecimal digit string that identifies the request process.
- **rankedNamespaces** (array[string])
  Ordered list of the hottest namespaces, highest value first.

### 401
Unauthorized.

#### Body: application/json (object)
- **badRequestDetail** (object)
  Bad request detail.
- **detail** (string)
  Describes the specific conditions or reasons that cause each type of error.
- **error** (integer(int32))
  HTTP status code returned with this error.
- **errorCode** (string)
  Application error code returned with this error.
- **parameters** (array[object])
  Parameters used to give more information about the error.
- **reason** (string)
  Application error message returned with this error.

### 403
Forbidden.

#### Body: application/json (object)
- **badRequestDetail** (object)
  Bad request detail.
- **detail** (string)
  Describes the specific conditions or reasons that cause each type of error.
- **error** (integer(int32))
  HTTP status code returned with this error.
- **errorCode** (string)
  Application error code returned with this error.
- **parameters** (array[object])
  Parameters used to give more information about the error.
- **reason** (string)
  Application error message returned with this error.

### 404
Not Found.

#### Body: application/json (object)
- **badRequestDetail** (object)
  Bad request detail.
- **detail** (string)
  Describes the specific conditions or reasons that cause each type of error.
- **error** (integer(int32))
  HTTP status code returned with this error.
- **errorCode** (string)
  Application error code returned with this error.
- **parameters** (array[object])
  Parameters used to give more information about the error.
- **reason** (string)
  Application error message returned with this error.

### 500
Internal Server Error.

#### Body: application/json (object)
- **badRequestDetail** (object)
  Bad request detail.
- **detail** (string)
  Describes the specific conditions or reasons that cause each type of error.
- **error** (integer(int32))
  HTTP status code returned with this error.
- **errorCode** (string)
  Application error code returned with this error.
- **parameters** (array[object])
  Parameters used to give more information about the error.
- **reason** (string)
  Application error message returned with this error.


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