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Hadoop Distributions

Apache Hadoop distribution is a open source frame work that allows processing of large data sets across the clusters of computers.

Disadvantages:

- It is not usable for faster access of data.
- We can't update the data.
- It is a bash processing system not real time processing.
- Deploy hadoop to cloud not possible.

Some popular hadoop distributions are

1) Cloudera
2) Hortonworks - Total open source
3) Mapr 

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