Hadoop copyFromLocal command

If you are running for the first time, please check whether hadoop is installed or not and command to check hadoop version is 

hadoop version

If you can view version of hadoop succesfully, then try coping files from local to hdfs and command goes below.

hadoop fs -copyFromLocal  "givelocaldirectory"  "givehdfsdirectory"

History of Hadoop (Baby to Big Elephant)

Map Reduce paradigm which started as baby in Google inc for processing heavy volumes of data in parallel, later became a powerful paradigm  for processing Huge volumes of data(Terra/Peta bytes).

Yahoo inc is one of the key organisations which helped and also funded for making Map Reduce paradigm to Hadoop(what it is today)

Contents of My View on Hadoop

                   
1. What is Big Data...?
2. What is Hadoop?
3. Why Hadoop?
4. Alternatives for Hadoop?
5. What is a Distributed File System(DFS)
6.Various DFS
7.What is Hadoop Distributed File System(HDFS)