Each component of MRS supports all open source parameters. MRS Manager supports the modification of some parameters for key application scenarios. Some component clients may not include all parameters with open source features. To modify the component parameters that are not directly supported by MRS Manager, users can add new parameters for components by using the configuration customization function on MRS Manager. Newly added parameters are saved in component configuration files and take effect after the component is restarted.
You have learned the meanings of parameters to be added, configuration files to take effect, and impact on components.
The configuration files that save the newly added customized parameters are displayed in Parameter File. Different configuration files may support open source parameters with the same names. After the parameters in different files are set to different values, the configuration effect depends on the sequence of the configuration files that are loaded by components. Service-level and role-level customized parameters are supported. Perform configuration based on the actual service requirements. Customized parameters for a single role instance are not supported.
When Operation succeeded is displayed, click Finish. The service is started successfully.
Configuring Customized Hive Parameters
Hive depends on HDFS. By default, Hive accesses the client of HDFS. The configuration parameters to take effect are controlled by HDFS in a unified manner. For example, HDFS parameter ipc.client.rpc.timeout affects the RPC timeout period for all clients to connect to the HDFS server. If you need to modify the timeout period for Hive to connect to HDFS, you can use the configuration customization function. After this parameter is added to the core-site.xml file of Hive, it can be identified by the Hive service and replace the HDFS configuration.
When Operation succeeded is displayed, click Finish. The service is successfully started.