Querying the Number of Subtasks_Task Details_APIs V5.0_API Reference

This API is used to calculate the number of subtasks based on the number of shards in the DDM or GaussDB Distributed database.

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

If you are using role/policy-based authorization, see Permissions and Supported Actions for details on the required permissions.
If you are using identity policy-based authorization, no identity policy-based permissions are required for calling this API.

GET /v5/{project_id}/jobs/child-count

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID of a tenant in a region For details about how to obtain the project ID, see Obtaining a Project ID.

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
instance_id	Yes	String	ID of a DDM or GaussDB Distributed instance.
region	No	String	Region. The default value is the current region code.
db_type	Yes	String	DB instance type. Enumerated values: gaussdbv5 ddm

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token obtained from IAM. It is a response to the API for obtaining a user token. This API is the only one that does not require authentication. After a request is processed, the value of X-Subject-Token in the header is the token value.
Content-Type	No	String	MIME type of the request body. Use the default value application/json. For APIs used to upload objects or images, the value varies depending on the flow type.
X-Language	No	String	Request language type Enumerated values: en-us zh-cn

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
count	Integer	Number of subtasks.

Status code: 422

**Table 5** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Querying the number of shards in the GaussDB Distributed database to obtain the number of DRS subtasks

https://{endpoint}/v5/{project_id}/jobs/child-count

{
  "instance_id" : "052fd1e1720c4d4cb09611b80a4af471in14",
  "db_type" : "gaussdbv5"
}

Status code: 200

Number of subtasks.

{
  "count" : 3
}

Status code: 422

Bad Request

{
  "error_code" : "DRS.M00004",
  "error_msg" : "Server error."
}

Status Code	Description
200	Number of subtasks.
422	Bad Request

For other statuses, see Status Code.

For details, see Error Code.

Querying the Number of Subtasks