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Elastic MapReduce

  • Release Notes and Announcements
  • Product Introduction
  • Purchase Guide
    • EMR on CVM Billing Instructions
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  • Getting Started
  • EMR on CVM Operation Guide
    • Planning Cluster
    • Administrative rights
    • Configuring Cluster
    • Managing Cluster
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  • Practical Tutorial
    • Practice of EMR on CVM Ops
    • Data Migration
    • Practical Tutorial on Custom Scaling
  • API Documentation
    • History
    • Introduction
    • API Category
    • Making API Requests
    • Cluster Resource Management APIs
    • Cluster Service APIs
    • User Management APIs
    • Information Query APIs
    • Information Query APIs
    • Scaling APIs
    • Configuration APIs
    • Other APIs
    • Cluster Lifecycle APIs
    • Serverless HBase APIs
    • YARN Resource Scheduling APIs
    • Data Types
    • Error Codes
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    • EMR on CVM
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API Category

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Terakhir diperbarui: 2026-10-10 14:57:52

Cluster Resource Management APIs

API Name Feature Frequency Limit (maximum requests per second)
CreateCluster Creates an EMR cluster (new) 20
CreateInstance Creates an EMR instance (original) 20
DescribeClusterNodes Queries information of a cluster node 20
DescribeInstances Queries cluster information 20
DescribeInstancesList Queries the cluster list 20
InquiryPriceCreateInstance Inquires the price for instance creation 20
InquiryPriceRenewInstance Inquires the price for renewal 20
InquiryPriceScaleOutInstance Inquires the price for a scale-out 20
InquiryPriceUpdateInstance Inquires the price for the configuration change 20
ConvertPreToPostCluster Converts a monthly subscription cluster to a pay-as-you-go cluster 20
ScaleOutCluster Scales out cluster nodes (new) 20
ScaleOutInstance Scales out an instance (original) 20
TerminateInstance Terminates an EMR instance 20
TerminateTasks Scales in Task nodes (original) 20
TerminateClusterNodes Terminates a cluster node (new) 20

Cluster Service APIs

API Name Feature Frequency Limit (maximum requests per second)
DescribeGlobalConfig Queries the global configuration of YARN resource scheduling 20
DescribeResourceSchedule Queries YARN resource scheduling information (original) 20
ModifyGlobalConfig Modifies the global configuration of YARN resource scheduling 20
ModifyResourceScheduleConfig Modifies the resource configuration of YARN resource scheduling (old) 20
ModifyResourceScheduler Modifies a YARN resource scheduler (original) 20
StartStopServiceOrMonitor Executes operations on a service 20
CreateDynamicInstance Creates a DynamicInstance in a containerized EMR on TKE cluster 20
ModifyDynamicInstance Updates a DynamicInstance in a containerized EMR on TKE cluster 20
TerminateDynamicInstances Terminates a DynamicInstance in a containerized EMR on TKE cluster 20
DescribeDynamicInstanceDetail Describes detailed information of a DynamicInstance in an EMR on TKE cluster 20

User Management APIs

API Name Feature Frequency Limit (maximum requests per second)
AddUsersForUserManager Adds a user list 20
DescribeUsersForUserManager Queries the user list 20
ModifyUserManagerPwd Modifies a user password (user management) 20
ModifyUserGroup Modifies a user group in user management 20
CreateGroupsSTD Creates user groups in batches in user management 20
DeleteGroupsSTD Deletes user groups in batches in user management 20
DescribeGroupsSTD Queries a user group in user management 20
ModifyUsersOfGroupSTD Changes user information in a user group under user management 20

Information Query APIs

API Name Feature Frequency Limit (maximum requests per second)
DescribeBootScript Obtains a bootstrap script 20
DescribeClusterFlowStatusDetail Queries the running status details of an EMR cluster task 20
DescribeHBaseTableOverview Obtains an overview of HBase table-level monitoring data 20
DescribeInspectionTaskResult Obtains the inspection task result list 20
DescribeInstanceOplog Obtains the instance operation logs 20
DescribeNodeResourceConfigFast Quickly obtains node specifications 20
DescribeNodeSpec Queries node specifications 20
DescribeServiceNodeInfos Queries service process information 20
DescribeHiveQueries Obtains Hive query information 100
DescribeInsightList Obtains insight result information 20
DescribeDAGInfo Queries DAG information 20
DescribeDynamicInstanceList Describes the DynamicInstance list of an EMR on TKE cluster 20
DescribeEMREventList Queries EMR event data information 20
DescribeEmrOverviewMetrics Queries metric data on the monitoring overview page 20
DescribeHBaseTableRequestMetric Obtains the read/write request metric data at the HBase table level 20
DescribeHBaseTableStoreSizeMetric Obtains the StoreSize monitoring metric data at the HBase table level 20
DescribeHDFSStorageInfo Queries the number of files stored in HDFS 20
DescribeKyuubiQueryInfo Obtains Kyuubi query information 20
DescribeMetaDBInfo Obtains cluster MetaDB data 20
DescribeSparkApplications Obtains the Spark task list 20
DescribeSparkQueries Obtains the Spark query information list 20
DescribeStarRocksQueryInfo Obtains StarRocks query information 20
DescribeTrinoQueryInfo Obtains Trino (PrestoSQL) query information 20

Scaling APIs

API Name Feature Frequency Limit (maximum requests per second)
DescribeAutoScaleGroupGlobalConf Obtains the global configuration of a scaling group 20
DescribeAutoScaleStrategies Obtains an automatic scaling rule 20
AddMetricScaleStrategy Adds an automatic scaling rule 20
DeleteAutoScaleStrategy Deletes an automatic scaling rule 20
DescribeAutoScaleRecords Obtains the detailed automatic scaling records of a cluster 20
DescribeNodeDataDisks Queries data disk information of a node 20
ModifyAutoScaleStrategy Modifies an automatic scaling rule 20

Configuration APIs

API Name Feature Frequency Limit (maximum requests per second)
DescribeExportConfs Queries the export configuration 20
ModifyInspectionSettings Sets the inspection task configuration 20
SetNodeResourceConfigDefault Sets default attributes of node specifications 20
DescribeServiceConfGroupInfos Describes service configuration group information 20
ModifyServiceParamsByExportConfs Imports and delivers a configuration 20

Other APIs

API Name Feature Frequency Limit (maximum requests per second)
AddNodeResourceConfig Adds node specifications 20
DeleteNodeResourceConfig Deletes node specifications 20
DescribeEmrApplicationStatics Queries YARN task statistics information 20
DescribeYarnScheduleHistory Views the YARN resource scheduling history (original) 20
ModifyBootScript Modifies a bootstrap script 20
ModifyInstanceBasic Modifies the cluster name 20
ModifyResourcesTags Forcibly modifies a tag 20
ModifyYarnDeploy Brings the configuration into effect after deployment (old) 20
InstallSoftware Installs a component 20

Cluster Lifecycle APIs

API Name Feature Frequency Limit (maximum requests per second)
AttachDisks Mounts a cloud disk 20
ModifyAutoRenewFlag Enables or disables auto-renewal 20
ModifyResource Changes the instance configuration 20
ResizeDataDisks Scales out cloud data disks 20

Serverless HBase APIs

API Name Feature Frequency Limit (maximum requests per second)
DescribeSLInstance Queries basic information of a Serverless HBase instance 20
TerminateSLInstance Terminates a Serverless HBase instance 20
ModifySLInstanceBasic Modifies the Serverless HBase instance name 20
DescribeSLInstanceList Queries the Serverless HBase instance list 20
CreateSLInstance Creates a Serverless HBase instance 20
ModifySLInstance Changes the configuration of a Serverless HBase instance 20

YARN Resource Scheduling APIs

API Name Feature Frequency Limit (maximum requests per second)
DescribeResourceScheduleDiffDetail Queries the change details of YARN resource scheduling 20
DeployYarnConf Brings the deployment into effect in YARN resource scheduling 20
ResetYarnConfig Resets data of YARN resource scheduling 20
DescribeYarnQueue Obtains queue information in resource scheduling 20
ModifyYarnQueueV2 Modifies queue information in YARN resource scheduling 20

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