Help & DocumentationElastic MapReduceAPI documentationInformation Query APIsDescribeInstances

DescribeInstances

Last updated: 2019-11-29 19:41:32

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Contents：

1. API Description

API domain name: emr.tencentcloudapi.com.

This API describes one or more specified EMR instances.

Default API request rate limit: 20 requests/sec.

2. Input Parameters

The following parameters are required for requesting this API, including action-specific parameters and common parameters. For more information about common parameters for all requests, see Common Request Parameters.

Parameter name Required Type Description
Action Yes String Common parameter. The name of this API: DescribeInstances
Version Yes String Common parameter. The version of this API: 2019-01-03
Region Yes String Common parameter. For more information, see the list of regions supported by the product.
InstanceIds.N No Array of String Query the list. If this is left empty, the list of all instances under the AppId is returned
Offset No Integer Query offset; 0 by default
Limit No Integer Limit for query results. The default value is 10.

3. Output Parameters

Parameter name Type Description
Result ClusterInfoResult Number of instances
RequestId String The ID of the request. Each request returns a unique ID. The RequestId is required to troubleshoot issues.

4. Examples

Example 1. Querying Instance Details

Input Sample Code

https://emr.tencentcloudapi.com/?Action=DescribeInstances
&Offset=0
&Limit=1
&InstanceIds.0=emr-b3zor8nr
&<Common request parameter>

Output Sample Code

{
  "Response": {
    "Result": {
      "TotalCnt": 1,
      "ClusterList": [
        {
          "ClusterId": "emr-b3zor8nr",
          "StatusDesc": "Cluster running",
          "ClusterName": "jaco2",
          "ZoneId": 190001,
          "AppId": 1258469122,
          "Addtime": "2019-03-14 20:44:31",
          "Runtime": "0 days 3 hours 41 minutes 13 seconds",
          "Config": {
            "SoftInfo": [
              "zookeeper-3.4.9",
              "hadoop-2.7.3",
              "sys-1.0"
            ],
            "MasterNodeSize": 1,
            "CoreNodeSize": 2,
            "TaskNodeSize": 1,
            "ComNodeSize": 0,
            "MasterResourceSpec": {
              "CPUCores": 4,
              "DiskType": "CLOUD_PREMIUM",
              "Memory": 8192,
              "RootDiskVolume": 100,
              "Spec": "CVM.S3",
              "StorageType": 5,
              "Volume": 100,
              "SpecName": ""
            },
            "CoreResourceSpec": {
              "CPUCores": 4,
              "DiskType": "CLOUD_PREMIUM",
              "Memory": 8192,
              "RootDiskVolume": 100,
              "Spec": "CVM.S3",
              "StorageType": 5,
              "Volume": 100,
              "SpecName": ""
            },
            "TaskResourceSpec": {
              "CPUCores": 4,
              "DiskType": "CLOUD_PREMIUM",
              "Memory": 8192,
              "RootDiskVolume": 100,
              "Spec": "CVM.S3",
              "StorageType": 5,
              "Volume": 100,
              "SpecName": ""
            },
            "CommonResourceSpec": {
              "CPUCores": 0,
              "DiskType": "",
              "Memory": 0,
              "RootDiskVolume": 0,
              "Spec": "",
              "StorageType": 0,
              "Volume": 0,
              "SpecName": ""
            },
            "Oncos": false,
            "COSSettings": {
              "LogOnCosPath": "",
              "CosSecretId": "",
              "CosSecretKey": ""
            }
          },
          "MasterIp": "118.24.246.22",
          "EmrVersion": "EMR-V2.0.1",
          "ChargeType": 1
        }
      ]
    },
    "RequestId": "e83dffa2-34be-4069-bb35-5a62f11e6d45"
  }
}

5. Developer Resources

API Explorer

This tool provides various capabilities such as online call, signature verification, SDK code generation, and quick API retrieval that significantly reduce the difficulty of using TencentCloud API.

SDK

TencentCloud API 3.0 integrates software development toolkits (SDKs) that support various programming languages to make it easier for you to call the APIs.

6. Error Codes

The following error codes are API business logic-related.
| Error Code | Description |
|---------|---------|
| InternalError.Test | The selected spec is sold out. |