• MapReduce Service

mrs
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  2. MapReduce Service
  3. User Guide
  4. MRS Manager Operation Guide
  5. Object Management
  6. Configuring Role Instance Parameters

Configuring Role Instance Parameters

Scenario

View and modify default role instance configurations on MRS Manager. Parameters must be configured based on site requirements. Configurations can be imported and exported.

Impact on the System

After the attributes of HBase, HDFS, Hive, Spark, Yarn, and MapReduce are configured, the client configurations need to be downloaded to update the files.

Procedure

  • Modify role instance configurations.
    1. On MRS Manager, click Service.
    2. Select the target service from the service list.
    3. Click the Instance tab.
    4. Click the target role instance in the role instance list.
    5. Click the Instance Configuration tab.
    6. Set Type to All. All configuration parameters of the role instances are displayed in the navigation tree.
    7. In the navigation tree, choose a parameter and change its value. You can also enter the parameter name in Search to search for the parameter and view the result.

      You can click to restore a parameter value.

    8. Click Save Configuration, select Restart the role instance, and click OK to restart the role instance.

      When Operation succeeded is displayed, click Finish. The service is started successfully.

  • Export configuration data of a role instance.
    1. On MRS Manager, click Service.
    2. Select a service.
    3. Select a role instance or click Instance.
    4. Select a role instance on a specified host.
    5. Click Instance Configuration.
    6. Click Export Instance Configuration to export the configuration data of a specified role instance, and choose a path for saving the configuration file.
  • Import configuration data of a role instance.
    1. Click Service.
    2. Select a service.
    3. Select a role instance or click Instance.
    4. Select a role instance on a specified host.
    5. Click Instance Configuration.
    6. Click Import Instance Configuration to import configuration data of a specified role instance.
    7. Click Save Configuration and select Restart the role instance. Click OK.

      When Operation succeeded is displayed, click Finish. The service is started successfully.