Hadoopin the systemYARNWhat resource types are supported for management?
(Multiple Choice)

• A.DiskSpace
• B.CPU
• C.Memory
• D.Network

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aboutstreamingdisaster recovery capability, which of the following statements is correct? (multiple choice)

• A.SupervisorAfter the process exits, it can beNimbusAutomatically identify and pull up without affecting the running business
• B.NimbusAfter the failure, the backupNimbusIt will take over automatically without affecting the running business
• C.WorkerCan be used after abnormal exitsupervisorsPulls up automatically without manual intervention
• D.When a node fails, the tasks on the node will be reassigned to other normal nodes without manual intervention

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writingMapReduceWhich two interfaces are usually required to be implemented by developers?

• A.combineandsort
• B.mapandcombine
• C.mapandreduce
• D.reduceandcombine

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existSpark, assuminglinesIs anDStreamobject,filterStatements can be filtered out80%data for the following two The correct statement is:
X: lines.filter(...).groupByKey(...)
Y: lines.groupByKey(...).filter(...)

• A.XCompareYlower performance
• B.XandYsame as performance
• C.XCompareYhigher performance
• D.UncertaintyXandYdifference in performance

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existKafkain, aboutConsumerWhich statement is correct? (multiple choice)

• A.ConsumerMainly for data consumption
• B.multipleConsumerconfigure the samegroup.idwhen theseConsumerConsumed data will not be duplicated
• C.newConsumerAPIConsumption data does not need to be specifiedZooKeeperaddress
• D.ConsumerNeed to specify when consuming dataTopic

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