Huawei Updated H13-723_V2.0 Exam Questions and Answers by mina

ProducerResponsible for production data,Consumerresponsible for consuming data,ProducerandConsumerneed between EstablishSocketconnect

Producercan either send data toBroker, and can send data toConsumersuperiorProducer

As a message producer, you can directly write data toZooKeeper

mouthProducerconnect any normalBrokerInstances can produce data

HFile

HLog

MemStore

HMaster

ZooKeeper

HDFS

HMaster

RegionServer

lines.flatMap(_.split(" ")).map(word =>(word,1)).reduce(_+_).print( )

lines.flatMap(_.split(" ")).map(word =>(word,word.length())).reduceByKey

(_+_).print( )

lines.flatMap(_.split(" ")).map(word =>(word,1)).reduceByKey(_+_).print

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lines.flatMap(_.split(" ")).flatmap(word =>(word,1)).groupByKey(_+_).print

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