Ref:- http://gurkulindia.com/main/2013/06/hadoop-intro/
What is the Hadoop : -
Hadoop
is a platform that is well suited to deal with semi-structured &
unstructured data, as well as when a data discovery process is needed.
That isn’t to say that Hadoop can’t be used for structured dara that is
readily available in a raw format; because it can.
Traditionally,
data goes through a lot of rigor to make it into the warehouse. This
data is cleaned up via various cleansing, enrichment, modeling, master
data management and other services before it is ready for analysis;
which is expensive process. Because of that expense, its clear that data
that lands in warehouse is not just high value, but has a broad
purpose; it is used to generate reports & dash-board where the
accuracy is the key.
In
contrast, Big Data repositories very rarely undergo the full quality
control versions of data injected into a warehouse, Hadoop is built for
the purpose of handling larger volumes of data, so prepping data and
processing it should be cost prohibitive.
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