MOB data in HBase is directly stored in HFile format on HDFS, and then the address information and size information of this file are stored as value on the store that manages HBase, and these files are managed centrally through tools. This can greatly reduce HBase's compression and split frequency and improve performance.

About RDDs. Which of the following statements is false?

The emergence of HFS solves the need to store a large number of small files (below 10MB) in HDFS. At the same time, it is necessary to store some mixed scenes of large files (above 10MB)

In the Fusionlnsight HD product, a typical Kafka cluster contains several Producers, several Borkers, several Consumers and a Zookeeper cluster

How is the HBaseM master elected?