Cloud Computing and Spark Code - IT Computer Science Assignment Help

Assignment Task

Question A

1. Please describe the concept of elasticity in the context of cloud computing. Please use examples.

2. Please describe an example scenario where it would be good to run a Hadoop cluster on the cloud. 

Also describe another example scenario where it would be good to run a Hadoop cluster on premise.

3. Please explain why MapReduce does schema-on-read instead of schema-on-write.

4. Please explain how to group data by a certain attribute using the MapReduce framework.

5. What are the advantages of using Hive over traditional relational databases (RDBMS)?

Please give an example application where it is better to use Hive rather than RDBMS. 

Explain why in this case it is better to use Hive rather than RDBMS.

6. What are the main reasons for introducing YARN?

7. Please describe the function of the application master in the YARN framework.

8. Please describe the advantages of using the lambda architecture of storm to process large data streams

9. Please describe the different types of big data problems that Apache Spark can be used to solve.

10. Please describe what the map and the reduce functions in Apache Spark can be used for.

11. Name two advantages of using SparkSQL datasets over using RDDs.

12. What are the benefits of using Apache Spark Streaming’s structured API?

13. Why would a company that used to only support disaster recovery now consider supporting high availability when moving their infrastructure onto the cloud? 

In your answer you should include an explanation of the difference between disaster recovery and high availability.

14. Please describe the advantages of using the following AWS services:

a. Relational Database Service (RDS)

b. Elastic Load Balancer

c. Cloud Formation

Question B

Answer the sub-questions of question B using the data described belowYou will answer the questions either using the Spark RDD API or Spark SQL dataframes/datasets. 

Please complete the question using spark RDDs for the questions marked as [Spark RDD], please complete the questions using dataframes/datasets for questions marked as [Spark SQL].

When you program Spark SQL you can use the dataset/dataframe operations or use SQL syntax.

E.g. dataset/dataframe operations syntax:

df.filter($"age" > 21).show()

df.select($"ID", $"age" + 1).show()

E.g. SQL syntax:

val sqlDF = spark.sql("SELECT * FROM animals")

sqlDF.show()

Write spark code to do the following. 

Your solution can consist of one or more lines of Spark code. You do not need to make the output format look good.

Marks will be awarded for more efficient code. For example, code that results in less data shuffles.

1. [Spark RDD] Output all lines of animals who drink milk and have 4 legs.

    

2. [Spark RDD] Output the percentage of animals with 4 legs that are mammals. 

3. That is, among all animals with 4 legs what percentage are mammals?

4. [Spark RDD] Output the number of animals of each type.  

5. The program should output the following: type, number of animals of that type.

6. [Spark SQL] Output the ID and age of all animals who have between 2 and 4 legs inclusive, with weight greater than 10. 

7. [Spark SQL] Output the average weight of animals of each type in descending order of average weight. Break ties arbitrarily, this means for two types with the same average weight, it does not matter which order they are listed. Each row of the output should contain the following: type, average weight.

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