The Huawei Cloud MapReduce service provides a one-stop enterprise-level big data cluster cloud service that is fully controllable by tenants. It is fully compatible with open source interfaces, and combines Huawei's cloud computing, storage advantages, and big data industry experience to provide customers with high-performance, low-cost, Flexible and easy-to-use full-stack big data platform, easily run Hadoop, Spark, HBase, Kafka, Storm and other big data components.
Realize real-time and offline analysis and mining to discover new business opportunities.

Which of the following nodes are included in the basic system architecture of HDFS? (Multiple choice)

Which of the following are extensions of ElasticSearch? (Multiple choice)

In Fusionlnsight HD products, a typical Kafka cluster includes several Producers, several Borkers, several Consumers and a Zookeeper cluster.

In the HDFS mechanism, the NameNode is responsible for managing metadata. Each read request on the client side needs to read metadata information from the metadata disk of the NameNode to obtain the location of the read file in the DataNode.