Hadoop is an open source distributed processing framework that manages data processing and storage for big data applications running in clustered systems.

What is big data?

According to Wikipedia, “Big data is a field that treats of ways to analyze, systematically extract information from, or otherwise deal with data sets that are too large or complex to be dealt with by traditional data-processing application software”.

Which data sets are too large or complex?

To classify Data Sets for Big Data, Data Sets need to have 3 main characteristics:

1. Volume
2. Velocity
3. Variety

What are the problems for Big Data?

Big Data can have many problems like:

1. Storage
2. Data Loss
3. Computational Efficiency
4. Cost

How to solve Big Data problems?

Why to use Hadoop?