Konst, You should take a look at the evaluate, not just the things that were marked as blockers 6 months ago, but also look at the things that have gone out in the 0.20.2xx line that aren't in 0.22.
Areas of work that leap to mind: 1. fixes to the linux task controller. 2. rpm work 3. mr scheduler limits 4. capacity and fair share improvements 5. har improvements -- Owen
