Adding Big Data module

courses/big_data/intro.md

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+# School of SRE: Big Data
+
+## Pre - Reads
+
+- Basics of Linux File systems.
+- Basic understanding of System Design.
+
+## Target Audience
+
+The concept of Big Data has been around for years; most organizations now understand that if they capture all the data that streams into their businesses, they can apply analytics and get significant value from it. 
+This training material covers the basics of Big Data(using Hadoop) for beginners, who would like to quickly get started and get their hands dirty in this domain.
+
+## What to expect from this training 
+
+This course covers the basics of Big Data and how it has evolved to become what it is today. We will take a look at a few realistic scenarios where Big Data would be a perfect fit. An interesting assignment on designing a Big Data system is followed by understanding the architecture of Hadoop and the tooling around it. 
+
+## What is not covered under this training
+
+Writing programs to draw analytics from data.
+
+## TOC:
+
+1. Overview of Big Data
+2. Usage of Big Data techniques
+3. Evolution of Hadoop
+4. Architecture of hadoop
+    1. HDFS
+    2. Yarn
+5. MapReduce framework
+6. Other tooling around hadoop
+    1. Hive
+    2. Pig
+    3. Spark
+    4. Presto
+7. Data Serialisation and storage