Hi Salma, 0.20.205 is a little old now. branch-1.x is the last stable release.
Although 0.23 is "alpha", Yahoo has been deploying it to pretty big clusters and the community is stabilizing MRv2 on this branch. branch-2 is where a lot of innovative development is happening. It too is "alpha" but if I were you, I would probably choose this branch. Its builds are monitored actively and should be stable to run. trunk contains the latest and greatest new features / bug-fixes etc., but in my experience is very unstable and might have trouble building / running. HTH Ravi ________________________________ From: Salma Saber <salma_7...@hotmail.com> To: common-dev@hadoop.apache.org Sent: Saturday, October 20, 2012 3:47 PM Subject: Hadoop Source Code Hi, I am a new Hadoop developer. I want to implement an algorithm which enhances the Hadoop performance in Heterogeneous environments. I tried to build and run many versions for the Hadoop source code but the only one that I have succeeded to build and run is hadoop-205. I want to know if this version is suitable to edit on it, or there is a better version I should use in my implementation. Thanks, Salma
