MRS Usage Guidelines
Using MRS for the First Time
Before purchasing an MRS cluster, you need to understand the basic concepts and usage process of MRS.
Buying an MRS Cluster
MRS supports one-click yearly/monthly or pay-per-use cluster purchase. You can customize the cluster type, component scope, number of nodes of each type, node instance specifications, AZ, and VPC network information. MRS automatically creates a cluster that meets the configuration requirements. You can also quickly purchase clusters of common application types, such as Hadoop analysis clusters, HBase query clusters, Kafka streaming clusters, and ClickHouse clusters.

The type of a purchased cluster cannot be changed, components cannot be added or modified, and the Kerberos status cannot be changed. If you need to change the value, you need to purchase a cluster again. Please confirm the cluster configuration before purchase.
Billing
How Is the Task Node in an MRS Cluster Billed?
Unsubscribing from a Specified Node in a Yearly/Monthly Cluster
Why Does My Unsubscription from ECS Fail After I Unsubscribe from MRS?
Account and Password
Resetting or Changing the Password of Manager User admin
Account Permission
Why Cannot I Find User Management in System Settings on MRS Manager?
Does Hue Provide the Function of Configuring Account Permissions?
Upgrade/Patching
How Do I Upgrade an MRS Cluster?
Can I Change the MRS Cluster Version?
Cluster Management
Can I Delete Components Installed in an MRS Cluster?
How Do I Add Services to an MRS Cluster?
MRS Becomes Abnormal After hostname Modification
OBS Certificate in a Cluster Expired
Can I Change MRS Cluster Nodes on the MRS Console?
Does an MRS Cluster Support System Reinstallation?
Big Data Development
Method of Building an MRS Sample Project
What Are the Differences Between Hive Versions?
APIs
Failed to Call an API to Create a Cluster
UDFs
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