Which of the following does not include the scheme authentication method of Zookeeper?

Flink is similar to Spark Streaming and is an event-driven real-time streaming system.

Which components in the Fusioninsight HD platform support table and column encryption?
(Multiple choice)

In the Hadoop system, if the backup factor of the HDFS file system is 3, then each time MapReduce runs the Task, it must transfer the file segments to be processed from 3 machines with copies.

Which of the following statements about the HBase secondary index is correct?