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Huawei H13-723_V2.0 Exam Syllabus Topics:

Huawei HCIP-Big Data Developer V2.0 Sample Questions:

1. There are the following business scenarios: User online log files have been stored inHDFSabove, the log file content format the formula is: each online record has three fields, namely name, gender, and online time, and the fields are separated by ","; It is required to print out all female netizens who spend more than two hours online. Which of the following code snippets can achieve The above business scenario? (multiple choice)

A) sc.textFile("/data/file/path").map(.split(",")).map(p=>FemaleInfo
(p(O),p(1),p(2).trim.toInt)).toDF.registerTemp Table("Female infoTable") sqlContext.sq(l "select name, sum(stay Time)as stay Time from FemaleInfoTable where gender=female).filter("stay Time >=120").collect).foreach(printin)
B) val text=sc.textFile("/data/fle/path")
val data=text.filter(_.contains("female"))
Val fermaleData:RDD(String,Int) =data.map{line=>val t=line.split(',')
(t(0),t(2).toInt)
}.reduceByKey(_+_)
Val result=femaleData.filter(line=>line.2>120)
Rusult.collect.map(x=>x._1 + ',' + x._2).foreach(println)
C) sc.textFile("/data/file/path").map(.split(",")).map(p=>FemaleInfo(p
(O),p(1),p(2).trim.toInt)).toDF.registerTemp Table("FemaleinfoTable")sqlContext.sql ("select name,sum(stay Time)as stay Time from FemaleInfoTable where gender= female'group by name").filter("stay Time >=120").collect).foreach(printin)
D) val text=sc.textFile("/data/fle/path")
val data=text.filter(_.contains("female"))
Val fermaleData:RDD(String,Int) =data.map(line=>val t=line.split(',')
(t(0),t(2).toInt)
}
Val result=femaleData.filter(line=>line.2>120)
Rusult.collect.map(x=>x._1 +','+ x._2).foreach(println)

2. High and high total1H0middle,QThe heart of the industryA. AIwill be called when the task is runQoziec1etCategory which method?

A) run
B) submit
C) .Suspend
D) getJobInfo

3. HDFSclient withNcopy toHDFSWhen writing a file, if one of the replicas fails to write, all replicas will return write failure

A) False
B) True

4. when aMapRcdueWhen the application is executed, which of the following actions ismapoccurs before the stage of?

A) split
B) sort
C) partition
D) combine

5. Tonganeng's societyHDofe, user-definedUDFcan andHmachine built-inUDFclass name, In this case, the user-definedUDF.

A) False
B) True

Solutions: