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NEW QUESTION: 1
CORRECT TEXT
Problem Scenario 90 : You have been given below two files
course.txt
id,course
1 ,Hadoop
2 ,Spark
3 ,HBase
fee.txt
id,fee
2,3900
3,4200
4,2900
Accomplish the following activities.
1. Select all the courses and their fees , whether fee is listed or not.
2. Select all the available fees and respective course. If course does not exists still list the fee
3. Select all the courses and their fees , whether fee is listed or not. However, ignore records having fee as null.
Answer:
Explanation:
See the explanation for Step by Step Solution and configuration.
Explanation:
Solution :
Step 1:
hdfs dfs -mkdir sparksql4
hdfs dfs -put course.txt sparksql4/
hdfs dfs -put fee.txt sparksql4/
Step 2 : Now in spark shell
// load the data into a new RDD
val course = sc.textFile("sparksql4/course.txt")
val fee = sc.textFile("sparksql4/fee.txt")
// Return the first element in this RDD
course.fi rst()
fee.fi rst()
//define the schema using a case class case class Course(id: Integer, name: String) case class Fee(id: Integer, fee: Integer)
// create an RDD of Product objects
val courseRDD = course.map(_.split(",")).map(c => Course(c(0).tolnt,c(1))) val feeRDD =fee.map(_.split(",")).map(c => Fee(c(0}.tolnt,c(1}.tolnt)) courseRDD.first() courseRDD.count(}
feeRDD.first()
feeRDD.countQ
// change RDD of Product objects to a DataFrame val courseDF = courseRDD.toDF(} val feeDF = feeRDD.toDF{)
// register the DataFrame as a temp table courseDF. registerTempTable("course") feeDF.
registerTempTablef'fee")
// Select data from table
val results = sqlContext.sql(......SELECT' FROM course """ )
results. showQ
val results = sqlContext.sql(......SELECT' FROM fee......)
results. showQ
val results = sqlContext.sql(......SELECT * FROM course LEFT JOIN fee ON course.id = fee.id......) results-showQ val results ="sqlContext.sql(......SELECT * FROM course RIGHT JOIN fee ON course.id = fee.id "MM ) results. showQ val results = sqlContext.sql(......SELECT' FROM course LEFT JOIN fee ON course.id = fee.id where fee.id IS NULL" results. show()

NEW QUESTION: 2

A. Option B
B. Option D
C. Option C
D. Option A
Answer: D

NEW QUESTION: 3
Which of the following are inputs of the Monitor and Control project work process?
A. Enterprise environmental factor
B. Project document updates
C. Project management plan
D. Performance report
Answer: A,C,D
Explanation:
Explanation/Reference:
Explanation:
Answer options C, D, and A are correct.
The Monitor and Control project work process is used to track, evaluate, and control the progress to arrange the performance objectives described in the project management plan. The inputs and outputs of the Monitor and Control project work process are as follows:
Inputs

Project management plan
Performance report
Enterprise environmental factor
Organizational process assets
Outputs

Change requests
Project management plan updates
Project document updates
Reference: "Project Management Body of Knowledge (PMBOK Guide), Fourth edition" Chapter: Procurement and Project Integration Objective: Monitoring Your Projects Progress

NEW QUESTION: 4
In which format will a Windows file be restored when using the EMC Avamar client Web interface?
A. tagged
B. uncompressed
C. zip
D. RAR
Answer: C