On Tue, Jul 26, 2011 at 4:52 PM, Steve Loughran <[email protected]> wrote: > > > Why does the MiniMR cluster go away in MR2? >
As Arun pointed out, MiniMR has lot of JT and TT bits ingrained in it which makes it almost unusable in MR2. I wish tests would have used MiniMR via a interface then the implementation could be changed to reflect MR2 runtime. > > > These are minor issues. The key thing is that MiniDFS cluster and MiniMR > cluster let you bring up a short lived MR cluster without any installation > overhead and run tests against it. Even if the hadoop-mapreduce code can > move away from it, it's still invaluable downstream > > Absolutely, infact MR2 has got similar things to write effective tests easily : - MiniYarnCluster - includes RM and NM - MiniMRYarnCluster (extends MiniYarnCluster) - includes AM and MR history server These follow Service lifecycles, so much easier to extend and work with. Thanks Sharad
