The Fusionlnsight HD cluster contains many kinds of services, and each service consists of thousands of roles. Which of the following are the roles of the service?( )

• A.NameNode
• B.HDFS
• C.Hbase
• D.DataNode

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What is the physical storage unit of Region in HBasel

• A.olumn
• B.Region
• C.ColumnFamily
• D.Row

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Multiple channels can be configured in the properties.protertises configuration file of Flumef to transmit data

• A.True
• B.False

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Map Reducein MaThe combine in stage p is a pre-grouping process and is optional.

• A.FALSE
• B.TRUE

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Where is the Meta Region routing information of HBase metadata stored in?

• A.Meta table
• B.HMaster
• C.Root table
• D.Zookeeper

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