0.20.x is what's majorly used in production environments today. I'd recommend installing 0.20.x or one of it branches (HBase requires the hadoop-0.20-append branch, for instance.).
I'm unsure if 0.21 series will be actively maintained since 0.22 should be out soon and there was some unconfirmed talk on the maintenance as well: http://search-hadoop.com/m/EKvjZ1kTpNs1/0.21+maintain&subj=Maintenance+of+Hadoop+0+21+branch+ In any case, I'd personally suggest using 0.20.2 release base as it remains a solidly good Apache release and many continue to use it. On Fri, Apr 29, 2011 at 12:58 AM, Juan P. <[email protected]> wrote: > Hi guys, > I wanted to know exactly which was the latest stable release of Hadoop. In > the site it says it's release 0.20.2, but 0.21.0 is also available and in > the repository there's already a branch for release 0.22.0. > > Is it possible that the current development branch is 0.22, the stable is > 0.21 and the site is just out of date? > > Or is that 0.22 is dev, 0.21 is a non-stable release, and 0.20.2 is the > current stable release version? > > Which release do you guys recommend I should start using (I'm brand new to > the technology)? > > Thanks for your help, > Juan > -- Harsh J
