Question: Hadoop/PySpark: Write a PySpark program to: 1. Iterate through a folder of files in a hadoop fs directory. 2. Open each file 3. calculate the

Hadoop/PySpark:

Write a PySpark program to:

1. Iterate through a folder of files in a hadoop fs directory.

2. Open each file

3. calculate the variance of the data in the file

4. write results (Filename, variance) to a new file.

5. print the average variance.

The file is ascii text in the following format

123.0

562.0

792.9

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Q:

Directions: ( CODE IN C ONLY!!!) Complete the following homework assignment using the description given in each section. Do not email code to TAs for help. They cannot help fix compile errors via...

Q:

Its about malloc function and I need your help desperately..:( I know there are a lot to do.. I am working on my own but not sure I can finish them. Please help me.. Input files: 1001 1591.63 M 1011...

Q:

Jones & Bartlett Learning, LLC. NOT FOR RESALE OR DISTRIBUTION CHAPTER Hot Spot Analysis 10 LEARNING OBJECTIVES C A R R Provide a working definition of a \"hot spot.\" , Be able to explain different...

Q:

c++ Overview In this assignment, you will simulate a simple board game. The board is a grid, and starts with a pile of money in each cell. Players take turns rolling four dice to pick a cell, and...

Q:

**UNIX** PROBLEM : Write a function that finds both volume and surface area of a rectangular box. Write a makefile to pull all these files together. Your function must use pointer notation (the...

Q:

Project 5 Due July 11th at 11:59 PM You are a business owner and you keep information on your employees stored in a text file. Each line contains the name of an employee, their employee id, the...

Q:

Done in C++, follow along. You will need to have the following #include files (and these are the only #include files you can have in your assignment), so write this at the top of a03.cxx: #include //...

Q:

Please finish the whole code. //====================== // Name : HashTable.cpp // Author : John Watson // Version : 1.0 // Copyright : Copyright 2017 SNHU COCE // Description : Hello World in C++,...

Q:

CMSC 202 Fall 2018 Project 1 State Internet Access Assignment: Project 1 State Internet Access Due Date: Thursday, September 27th at 8:59pm Value: 80 points 1. Overview In this project, you will:...

Q:

Please finish the whole code. //====================== // Name : HashTable.cpp // Author : John Watson // Version : 1.0 // Copyright : Copyright 2017 SNHU COCE // Description : Hello World in C++,...

Q:

Is the Sec. 704(d) loss limitation rule more or less restrictive than the at-risk rules? Explain.

Q:

Glory is going to invest a certain amount at 10% per year, compounded quarterly. You could receive $12,000 of this investment ten years from now. What is the most he must pay now for this investment?

Q:

BE13.4 (LO 1) Assume the bonds in BE13.2 were issued at 92.6393 to yield 12%. Prepare the journal entries for (a) January 1, (b) July 1, and (c) December 31.

Q:

CT Corp Comprehensive Question Canadian Tire Corporation, Limited ( Canadian Tire ) is a family of companies that includes a retail segment and a financial services division, among others. The retail...

Q:

5-17 Allowing employees use their own smartphones for work will save the company money. Do you agree? Why or why not? Just about everyone who has a smartphone wants to be able to bring it to work and...

Q:

5-18 What are the distinguishing characteristics of cloud computing and what are the three types of cloud services?

Q:

5-15 What management, organization, and technology factors should be addressed when deciding whether to allow employees to use their personal smartphones for work? Just about everyone who has a...