BigData : The data growth is 100 times bigger than population.

There are approximately 490,000 babies born and Over 150,000 People Die every day worldwide.

1. Near about 175 Million People Log Into Facebook Every Day, more on 250 million photos uploaded per day, 2.7 billion likes and comments per day.but more than this,
2. Twitter has confirmed that there are over 250,000,000 tweets posted every single day on the network.
3. Over 800 million unique users visit YouTube each month, Over 4 billion hours of video are watched each month, 72 hours of video are uploaded to every minute.
4. In 2011, YouTube had more than 1 trillion views or around 140 views for every person on Earth

This is present, what about the future, data is increasing 100 times more than human growth speed.

More recently, multiple analysts have estimated that data will grow 800% over the next five years. Computer World states that unstructured information might account for more than 70%–80% of all data in organizations

Volume,Variety and Velocity are the three measure pillars of BigData to achieve this data becomes Unstructured Data.
Unstructured Data : The Data that either does not have a data model or does not have relational tables. Unstructured data is typically text-heavy, but may contain data such as pictures, videos, songs, and of course the tabular data.

However, unstructured content is largely created by humans: inconsistent, emotional, careless, opinionated, lazy, driven, over-worked, always unique, humans. Appreciating this difference in the origins of the data that we seek to analyze is the first step to producing actionable insight and business advantage.

Then only Hadoop is one of the best the solution for BigData.

Hadoop:
The Apache Hadoop is a open source framework that allows for the distributed processing of large data sets(BigData) across clusters of computers using simple programming models.

Hadoop changes the economics and the dynamics of large scale computing. Its impact can be boiled down to four salient characteristics.

Eighty percent of the world’s data is unstructured, and most businesses don’t even attempt to use this data to their advantage. Imagine if you could afford to keep all the data generated by your business? Imagine if you had a way to analyze that data?

For more details about hadoop : http://hadoop.apache.org/