I think that it's important that we provide this characterization about the work that's needed to make Chukwa current.
Regards, Alan Hadoop has evolved in a non straight forward release branches. Chukwa currently works with Hadoop 1.x branch. For moving forward to Hadoop 2.x, the mapreduce jobs need to be using the new Yarn framework to implement some of the missing pieces that Hadoop broke the compatibility. HBase has done something similar for Hadoop compatibility layer. Chukwa will have to do the same thing to keep up to date with Hadoop 2.x. It may be one or two weeks to work on it full time. The instrumentation points in MR v1 will needs to be migrated and instrument Yarn. It is going to be interesting work to monitor and analyze Yarn. Therefore, the work may be interesting to people that would like to visualize yarn performance. We probably should release 0.6 as bugfix release before working on this.
