Hi Srinivas,
I am a Hybris developer and here are the points you might consider:
Pros.
Most options are out of box - you just need to setup the storefront and other stuff like cockpits are auto-created (customization is a pain, though)
Easy to setup and modify the e-commerce solution - with minimal DTO, facade and spring mvc/config changes.
Cons.
It is a closed source/proprietary technology - I've always missed the freedom of open sourced
java frameworks here.
You can't get anything apart from their wiki and forums (and they keep on changing their forums a couple of years) on google or elsewhere.
Very restrictive if you are thinking of some customization (it is basically a spring based product instead of a framework that you can build any custom app upon).
I would not go into details for Hadoop (and its ecosystem) as it is already discussed to death in Internet.
The rest is for you to decide!
good luck.