By configuring which of the following parameters can the logs generated in Kafkal be cleaned up?

• A.log.cleanup.policy
• B.log.retention.bytes
• C.log.retention.hours
• D.server.properties

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Kerberos can only provide security authentication for services within the cluster.

• A.True
• B.False

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In the process of data transmission by Flume, after sink takes the data and writes it to the destination, events will be deleted from the channel.

• A.True
• B.False

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Which of the following descriptions about bucketing is correct in Hive? (Multiple choice)

• A.Different data can be put into different buckets according to the way of buckets
• B.Unsortable in the bucket
• C.The advantage of bucketing is to obtain higher query processing efficiency and make sampling more efficient
• D.You can specify the number of buckets when creating a table

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When the size of a Region gradually increases in HBase, it may be trimmed.

• A.False
• B.True

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