In Spark On YARN mode, the node without NodeManager cannot start the executor to execute the Task

• A.True
• B.False

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Which of the following descriptions of the HBase storage model are correct? (Multiple choice)

• A.The same key value key is associated with multiple values
• B.Even if there are multiple KeyValues with the same key value and the same Qualifier, there may be more than one. In this case, time stamping is used to distinguish
• C.KeyValue has key information such as timestamp and type
• D.Every KeyValue has a Qualifier logo

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When importing data into a Hive table, the validity of the data will not be checked, but only when the data is read.

• A.True
• B.False

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What types of data sources does F1ink stream processing include?

• A.Socket streams
• B.Collections
• C.JDBC
• D.Files

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With the continuous increase in the volume of big data, the requirements for the physical security of data storage are getting higher and higher, and higher requirements are also put forward for the multiple copies of data and disaster recovery mechanism.

• A.True
• B.False

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