[DISCUSS] Dropping support for hadoop versions 2.5.x and lower for Tez 0.9.x ?

[Hitesh Shah]

Hi folks 

Given that hadoop 2.6.0 released sometime in Nov 2014 and considering that it 
has pretty much all of the feature set that Tez uses, what do folks think of 
making hadoop 2.6.0 as the minimum required version for Tez from version 0.9.0 
onwards?

thanks
— Hitesh