once you build 4mc it provides the command line '4mc' tool that can compress/uncompress ; if you have doubts or issues building, let me know
4mc is a container, so it can contain anything; if you want to use it with hadoop leveraging scalability, an adapter must be created; e.g. if ElephantBird supports it, I can help you create the bridge between the two.
Hi Couple of doubts
Thanks
Kind Regards Akhil Dogra