HUAWEI CLOUD MapReduce Service MRS provides real-time distributed computing racks for analysis and calculation of...

HUAWEI CLOUD MapReduce Service MRS provides real-time distributed computing racks for analysis and calculation of massive real-time data streams, and in the elevator networking industry, smart elevator data can be uploaded to the MRS streaming cluster in real time for real-time monitoring. The system needs to support access from starfish data sources and collect data in real time. Which of the following components do you need to include when planning the MRS cluster? Multiple selection