Comparing Parameters

Function

This API is used to compare instance parameters with those in the default template. Before calling this API:

Learn how to authorize and authenticate it.
Obtain the required region and endpoint.

URI

POST /v3/{project_id}/configurations/starrocks/comparison

**Table 1** URI parameter
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID of a tenant in a region. To obtain this value, see Obtaining a Project ID. Constraints N/A Range The value contains 32 characters. Only letters and digits are allowed. Default Value N/A

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	Definition User token. To obtain this value, call the IAM API for obtaining a user token. The value of X-Subject-Token in the response header is the token value. Constraints N/A Range N/A Default Value N/A
Content-Type	Yes	String	Definition Content type. Constraints N/A Range application/json Default Value N/A
X-Language	No	String	Definition Request language type. Constraints N/A Range en-us zh-cn Default Value en-us

**Table 3** Request body parameter
Parameter	Mandatory	Type	Description
source_configuration_id	Yes	String	Definition ID of the source parameter template for comparison. To obtain this value, see Querying a StarRocks Instance. Constraints N/A Range N/A Default Value N/A

Response Parameters

Status code: 200

**Table 4** Response body parameter
Parameter	Type	Description
differences	Array of ParamGroupParameterDifferences objects	Definition Differences between parameters in the source and target parameter templates. Range N/A

**Table 5** ParamGroupParameterDifferences
Parameter	Type	Description
parameter_name	String	Parameter name.
source_value	String	Parameter value in the source parameter template.
target_value	String	Parameter value in the target parameter template.

Status code: 400

**Table 6** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 500

**Table 7** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Example Request

POST https://{endpoint}/v3/0483b6b16e954cb88930a360d2c4e663/configurations/comparison

{
  "source_configuration_id" : "a2069d40256f40078c52d90d6a91ee63pr17",
}

Example Response

Status code: 200

Differences between parameters.

{
  "differences" : [ {
    "parameter_name" : "alter_tablet_worker_count",
    "source_value" : "4",
    "target_value" : "3"
  } ]
}

Status Code

For details, see Status Codes.

Error Code

For details, see Error Codes.

Parent topic: HTAP (Standard Edition)

Previous topic: Enabling Assign Requests to Row and Column Store Nodes for a StarRocks Instance

Next topic: Upgrading the Kernel Version of a StarRocks Instance

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