Yahoo to open source s4, their real-time mapreduce project

<a href="http://wiki.s4.io/Manual/S4Overview" rel="nofollow">http://wiki.s4.io/Manual/S4Overview</a>

As pointed out in the question link, the git repo would be available at <a href="http://github.com/s4" rel="nofollow">http://github.com/s4</a> in the near future.

will this supersede hadoop ?