Dear Phany,
Please find this step out to configure MapReduce:
Step 1 Log in to FusionInsight Manager.
Step 2 Choose Cluster > Name of the desired cluster > Service.
Step 3 Click Mapreduce.
Step 4 Choose Configuration > All Configurations.
Step 5 On the parameter configuration page, search for and add parameters.
Step 6 Check whether the FusionStorage cluster has three storage nodes.
If yes, go to Step 7.
If not, go to Step 8.
Step 7 Search for mapred.hdfs-site.customized.configs on the parameter configuration page and
click + to add a customized parameter.
Step 8 Search for mapred.hdfs-site.customized.configs on the parameter configuration page and
click + to add a customized parameter.
Step 9 Click Save. In the displayed Save Configuration dialog box, confirm the modification and
click OK. The system prompts that the operation is successful.
Step 10 Click Finish. The configuration is saved successfully.
Restart the expired service or instance for the configuration to take effect.
Thanks.