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NEW QUESTION: 1
How can the performance of an rx4640 equipped with two mx2 modules and 16GB of memory be improved?
A. by adding more memory DIMMs
B. by adding a memory board and distributing the DIMMs
C. by adding a third mx2 module
D. by adding two 1.6GHz/9MB processors
Answer: C
NEW QUESTION: 2
Drag and drop the WLAN components from the left onto the correct descriptions on the right.
Answer:
Explanation:
NEW QUESTION: 3
Your company negotiates a project contract worth 120, 000 USD with a customer. To maintain an acceptable profit margin, the budget for the project is set at 85, 000 USD. The project manager wants to manage the project as three related subprojects, so you divide the total budget into 25, 000 USD, 40, 000 USD, and 20, 000 USD. When you create the root project, you create the original budget and submit the budget to workflow for approval. How should you manage the budgeting for the entire project hierarchy?
A. Manage the budgeting separately for each subproject in the project hierarchy.
B. Manage the budgeting as a single unit for the entire project hierarchy.
C. Manage the budgeting only at the subproject level in the project hierarchy.
D. Manage the budgeting separately for each project type in the project hierarchy.
Answer: B
NEW QUESTION: 4
CORRECT TEXT
Problem Scenario 31 : You have given following two files
1 . Content.txt: Contain a huge text file containing space separated words.
2 . Remove.txt: Ignore/filter all the words given in this file (Comma Separated).
Write a Spark program which reads the Content.txt file and load as an RDD, remove all the words from a broadcast variables (which is loaded as an RDD of words from Remove.txt).
And count the occurrence of the each word and save it as a text file in HDFS.
Content.txt
Hello this is ABCTech.com
This is TechABY.com
Apache Spark Training
This is Spark Learning Session
Spark is faster than MapReduce
Remove.txt
Hello, is, this, the
Answer:
Explanation:
See the explanation for Step by Step Solution and configuration.
Explanation:
Solution :
Step 1 : Create all three files in hdfs in directory called spark2 (We will do using Hue).
However, you can first create in local filesystem and then upload it to hdfs
Step 2 : Load the Content.txt file
val content = sc.textFile("spark2/Content.txt") //Load the text file
Step 3 : Load the Remove.txt file
val remove = sc.textFile("spark2/Remove.txt") //Load the text file
Step 4 : Create an RDD from remove, However, there is a possibility each word could have trailing spaces, remove those whitespaces as well. We have used two functions here flatMap, map and trim.
val removeRDD= remove.flatMap(x=> x.splitf',") ).map(word=>word.trim)//Create an array of words
Step 5 : Broadcast the variable, which you want to ignore
val bRemove = sc.broadcast(removeRDD.collect().toList) // It should be array of Strings
Step 6 : Split the content RDD, so we can have Array of String. val words = content.flatMap(line => line.split(" "))
Step 7 : Filter the RDD, so it can have only content which are not present in "Broadcast
Variable". val filtered = words.filter{case (word) => !bRemove.value.contains(word)}
Step 8 : Create a PairRDD, so we can have (word,1) tuple or PairRDD. val pairRDD = filtered.map(word => (word,1))
Step 9 : Nowdo the word count on PairRDD. val wordCount = pairRDD.reduceByKey(_ + _)
Step 10 : Save the output as a Text file.
wordCount.saveAsTextFile("spark2/result.txt")