Assuming that HDFS only saves 2 copies when writing data. During the writing process, the HDFS Client first writes the data to DataNodel1 and then writes the data to DataNode2.

• A.False
• B.True

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In the Fusioninsight HD system, if a Loader node in the cluster is abnormal and other services are not abnormal, the normal use of Loader service functions will not be affected.

• A.True
• B.False

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The checkpoint mechanism in Flink continuously draws snapshots of streaming applications. The state snapshots of streaming applications can only be saved in the HDFS file system

• A.True
• B.False

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Batch processing of high-value and highly aggregated information and knowledge is the main business requirement of the big data industry.

• A.True
• B.False

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What storage formats does Hive support in the Fusioninsight HD system include? (Multiple choice)

• A.SequenceFile
• B.TextFile
• C.HFile
• D.RCFile

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