In the numberaccording toDuring stream processing, eachthingThe time can be divided into which of the following three?

• A.ingostion time, that isevent arrival stream processing systemtime
• B.dalay time,That is, the extension time from the occurrence of the event to the processing
• C.went time, that istime of event
• D.procmming time,Right nowthingquiltsystemprocessing time

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Under the HDFS federation mechanism, metadata between NameNodes is not shared.

• A.True
• B.False

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The size of the memory allocated by YARN to Containerb in the Hadoop system, which can be set by the parameter yarn.app.mapreduceam.resource.mb

• A.True
• B.False

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F1ink has no restart strategy.

• A.False
• B.True

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The Fusionlnsight HD management node provides a dual-machine HA mechanism. After the primary node fails, the primary and secondary nodes need to manually implement Failover.

• A.True
• B.False

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