Help Center > > User Guide> Managing an Existing Cluster> Component Management> Configuring Service Parameters

Configuring Service Parameters

Updated at: Oct 21, 2021 GMT+08:00

On the MRS console, you can view and modify the default service configurations based on site requirements and export or import the configurations.

Impact on the System

  • You need to download and update the client configuration files after configuring HBase, HDFS, Hive, Spark, Yarn, and MapReduce service properties.
  • The parameters of DBService cannot be modified when only one DBService role instance exists in the cluster.


You have synchronized IAM users (on the Dashboard tab page, click Click to synchronize on the right side of IAM User Sync to synchronize IAM users).

Figure 1 Synchronizing IAM users (using MRS 1.9.2 as an example)

Modifying Service Parameters

  1. On the MRS cluster details page, click Components.
    Figure 2 Component management (using MRS 1.9.2 as an example)
  2. Select the target service from the service list.
  3. Click Service Configuration.
  4. Switch Basic to All. All configuration parameters of the service are displayed in the navigation tree. The service name and role names are displayed from upper to lower in the navigation tree.
  5. In the navigation tree, select a specified parameter and change its value. You can also enter the parameter name in the Search box to search for the parameter and view the result.

    If you want to cancel the modification of a parameter value, click to restore it.

  6. Click Save Configuration, select Restart the affected services or instances, and click OK.

    To update the queue configuration of Yarn without restarting service, choose More > Refresh Queue on the Service Status tab page to update the queue for the configuration to take effect.

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