Flink is suitable for applications with high concurrency processing data and millisecond delay.

• A.False
• B.True

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The () interface in Flink is used for stream data processing, and the () interface is used for batch processing

• A.Data Stream APl, DataSet APl
• B.Stream API, Batch API
• C.DataBatch APl, DataStreamAPl
• D.BatchAPl, Stream APl

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Which of the following options are action operators?

• A.reduceByKe
• B.reduce
• C.collect
• D.mapPartiion

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BelowcloseAtWhat does Flick's fault tolerance mechanism describe errors?

• A.SaveThe point mechanism ensures thatAfter the program is upgraded or modified and developed, etC. Also able to restore from a saved state bit healthy boot
• B.Chackpointmechanism guaranteesAfter the program is upgraded or modified and developed, etC. Also able to restore from a saved state bit healthy boot
• C.Chackpoint mechanismGuaranteed in real timeprogram operationrun time, even ifunexpectedlycan alsoEnterRowsinceIrecovercomplex
• D.SavepointmechanismGuaranteed in real timeprogram operationrun time, even ifunexpectedlycan alsoEnterRowsinceIrecover

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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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