If you want to add 1 to the digital value stored in the Key, which command should be used?

• A.decr
• B.incrby
• C.decrby
• D.incr

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Which of the descriptions of the Loader job in FusionlnsightHD is correct?

• A.After the Loader submits the job to YARN for execution, if the Loade phase is abnormal at this time, the job fails to execute.
• B.After the Loader submits a job to YARN for execution, other jobs cannot be submitted until the job is executed.
• C.After the Loadet job fails to execute, garbage data will be generated, which needs to be cleared manually by the user
• D.The Loader submits the job to the small YARN for execution. If a Mapper task fails to execute, it can automatically retry

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Channel supports transactions, provides weaker sequence guarantees, and can connect any number of Sources and Sinks.

• A.True
• B.False

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A Fusioninsight HD cluster contains multiple services, and each service consists of several roles. Which of the following are the roles of the service?

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

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Which of the following descriptions about the deployment of big data components on Kunpeng and x86 servers is correct? (Multiple choice)

• A.No shortcomings in performance
• B.Single component (such as HDFS) supports mixed deployment of Kunpeng server and x86 server
• C.Achieve autonomous controllability of some equipment
• D.Support mixed deployment of Kunpeng server and ordinary x86 server in a single cluster

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