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Overview of the Hadoop Ecosystem

Back to: The Ultimate Hands-On Hadoop: Tame your Big Data!

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Hadoop Overview and History

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HDFS: What it is, and how it works

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Lessons

Learn all the buzzwords! And install the Hortonworks Data Platform Sandbox.
- If you have trouble downloading Hortonworks Data Platform…
- Installing Hadoop
- Hadoop Overview and History
- Overview of the Hadoop Ecosystem
Using Hadoop’s Core: HDFS and MapReduce
- HDFS: What it is, and how it works
- Installing the MovieLens Dataset
- [Activity] Install the MovieLens dataset into HDFS using the command line
- MapReduce: What it is, and how it works
- How MapReduce distributes processing
- MapReduce example: Break down movie ratings by rating score
- [Activity] Installing Python, MRJob, and nano
- [Activity] Code up the ratings histogram MapReduce job and run it
- [Exercise] Rank movies by their popularity
- [Activity] Check your results against mine!
- File Formats (Avro, Parquet, ORC, Protobuf, JSON, XML)
Programming Hadoop with Pig
- Introducing Ambari
- Introducing Pig
- Example: Find the oldest movie with a 5-star rating using Pig
- [Activity] Find old 5-star movies with Pig
- More Pig Latin
- [Exercise] Find the most-rated one-star movie
- Pig Challenge: Compare Your Results to Mine!
Programming Hadoop with Spark
- Why Spark?
- The Resilient Distributed Dataset (RDD)
- [Activity] Find the movie with the lowest average rating – with RDD’s
- Datasets and Spark 2.0
- [Activity] Find the movie with the lowest average rating – with DataFrames
- [Activity] Movie recommendations with MLLib
- [Exercise] Filter the lowest-rated movies by number of ratings
- [Activity] Check your results against mine!
Using relational data stores with Hadoop
- What is Hive?
- [Activity] Use Hive to find the most popular movie
- How Hive works
- [Exercise] Use Hive to find the movie with the highest average rating
- Compare your solution to mine.
- Integrating MySQL with Hadoop
- [Activity] Install MySQL and import our movie data
- [Activity] Use Sqoop to import data from MySQL to HFDS/Hive
- [Activity] Use Sqoop to export data from Hadoop to MySQL
Using non-relational data stores with Hadoop
- Why NoSQL?
- What is HBase
- [Activity] Import movie ratings into HBase
- [Activity] Use HBase with Pig to import data at scale.
- Cassandra overview
- If you have trouble installing Cassandra…
- [Activity] Installing Cassandra
- [Activity] Write Spark output into Cassandra
- MongoDB overview
- [Activity] Install MongoDB, and integrate Spark with MongoDB
- [Activity] Using the MongoDB shell
- Choosing a database technology
- [Exercise] Choose a database for a given problem
Querying your Data Interactively
- Overview of Drill
- [Activity] Setting up Drill
- [Activity] Querying across multiple databases with Drill
- Overview of Phoenix
- [Activity] Install Phoenix and query HBase with it
- [Activity] Integrate Phoenix with Pig
- Overview of Presto
- [Activity] Install Presto, and query Hive with it.
- [Activity] Query both Cassandra and Hive using Presto.
Managing your Cluster
- YARN explained
- Tez explained
- [Activity] Use Hive on Tez and measure the performance benefit
- Mesos explained
- ZooKeeper explained
- [Activity] Simulating a failing master with ZooKeeper
- Oozie explained
- [Activity] Set up a simple Oozie workflow
- Zeppelin overview
- [Activity] Use Zeppelin to analyze movie ratings, part 1
- [Activity] Use Zeppelin to analyze movie ratings, part 2
- Hue overview
- Other technologies worth mentioning
Feeding Data to your Cluster
- Kafka explained
- [Activity] Setting up Kafka, and publishing some data.
- [Activity] Publishing web logs with Kafka
- Flume explained
- [Activity] Set up Flume and publish logs with it.
- [Activity] Set up Flume to monitor a directory and store its data in HDFS
Analyzing Streams of Data
- Spark Streaming: Introduction
- [Activity] Analyze web logs published with Flume using Spark Streaming
- [Exercise] Monitor Flume-published logs for errors in real time
- Exercise solution: Aggregating HTTP access codes with Spark Streaming
- Apache Storm: Introduction
- [Activity] Count words with Storm
- Flink: An Overview
- [Activity] Counting words with Flink
Designing Real-World Systems
- The Best of the Rest
- Review: How the pieces fit together
- Understanding your requirements
- Sample application: consume webserver logs and keep track of top-sellers
- Sample application: serving movie recommendations to a website
- [Exercise] Design a system to report web sessions per day
- Exercise solution: Design a system to count daily sessions
Learning More
- Books and online resources
- Continue your Learning Journey!

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