Difference between revisions of "Course: Massive Data Analysis 2014/Hadoop Exercise"
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* What to submit for these exercises: | * What to submit for these exercises: | ||
** Code: place your code for exercises 1, 2 and 3 in a public GitHub repository | ** Code: place your code for exercises 1, 2 and 3 in a public GitHub repository | ||
** Results: put the results in your S3 bucket (don't forget to make it public) | ** Results: put the results in your S3 bucket (don't forget to make it public) [[http://bigdata.poly.edu/~tuananh/files/S3MakePublicInstruction.pdf instruction]] | ||
** Complete this [http://bit.ly/1vAxovu form] to submit the links to your GitHub repository and S3 bucket. '''Deadline: 11:59 PM on Oct 8, 2014''' | ** Complete this [http://bit.ly/1vAxovu form] to submit the links to your GitHub repository and S3 bucket. '''Deadline: 11:59 PM on Oct 8, 2014''' | ||
** Office Hours: Oct 7 (Tue) from 3pm to 5pm, at 2 MetroTech Center, 10th floor, 10.053A | ** Office Hours: Oct 7 (Tue) from 3pm to 5pm, at 2 MetroTech Center, 10th floor, 10.053A | ||
Latest revision as of 20:46, 8 October 2014
Before you start
- You must have Hadoop installed and working on your local machine. You also need to setup your Amazon AWS account. Refer to the instruction in the course page.
- Download the following package: http://bigdata.poly.edu/~tuananh/files/hadoop-exercise.zip. This package contains the basic WordCount example to help you get started.
- What to submit for these exercises:
- Code: place your code for exercises 1, 2 and 3 in a public GitHub repository
- Results: put the results in your S3 bucket (don't forget to make it public) [instruction]
- Complete this form to submit the links to your GitHub repository and S3 bucket. Deadline: 11:59 PM on Oct 8, 2014
- Office Hours: Oct 7 (Tue) from 3pm to 5pm, at 2 MetroTech Center, 10th floor, 10.053A
Hands-on exercises
- Note: Input for exercises: s3://mda2014/input/wikipedia.txt
- Exercise 0: WordCount
- Run the basic WordCount example on your local machine and AWS
- Follow the instructions to create your Amazon Elastic MapReduce (EMR) cluster
- Instructions to run WordCount on your local machine and EMR cluster will be given in class
- Note: You don't have to submit code and results for this exercise.
- Exercise 1: Fixed-Length WordCount
- For this exercise, you will only count words with 5 characters
- Output: Key is the word, and value is the number of times the word appears in the input.
- Exercise 2: InitialCount
- Count the number of words based on their initial (first character), i.e., count the number of words per initial
- The letter case should not be taken into account. For example, Apple and apple will be both counted for initial A
- Output: Key is the initial (A to Z in UPPERCASE), and value is the number of words having that initial (in either uppercase or lowercase).
- Exercise 3: Top-K WordCount
- Output the top 100 most frequent 7-character words, in descending order of frequency
- Output: Key is the word, and value is the number of times the word appears in the input.