Actually, 1.2.1 is out (and marked stable). I see no reason not to upgrade.
http://hadoop.apache.org/docs/r1.2.1/releasenotes.html As far as performance goes, when I upgraded our cluster from 1.0.4 to 1.1.2, our small jobs (that took about 1 min each) were taking about 20-30s less time. So there is definitely some performance enhancements! On Fri, Aug 9, 2013 at 9:56 AM, Marcos Luis Ortiz Valmaseda < [email protected]> wrote: > Regards, Viswanathan J. > Like Hars said, the release notes described every bug fix, minor or > major improvements with the link to the related JIRA for each one. > > Just a simple question? Why not upgrade directly to 1.2.0? > There are lot of good improvements and bug fixes here too. > > See the Release notes here: > http://hadoop.apache.org/docs/r1.2.0/releasenotes.html > > 2013/8/9, Harsh J <[email protected]>: > > The link Jitendra provided lists all the changes exhaustively. What > > are you exactly looking for beyond that? For Performance related > > changes, they are probably noted, so just search the same page for > > Performance. > > > > On Fri, Aug 9, 2013 at 7:41 PM, Viswanathan J > > <[email protected]> wrote: > >> I have seen these release notes already, any other comment on this > >> upgrade > >> regarding MR Job processing and any performance improvement. > >> > >> On Aug 9, 2013 6:27 PM, "Jitendra Yadav" <[email protected]> > >> wrote: > >>> > >>> Please refer Hadoop 1.1.2 release notes. > >>> > >>> http://hadoop.apache.org/docs/r1.1.2/releasenotes.html > >>> > >>> On Fri, Aug 9, 2013 at 5:41 PM, Viswanathan J > >>> <[email protected]> > >>> wrote: > >>>> > >>>> Hi, > >>>> > >>>> Planning to upgrade hadoop from 1.0.3 to 1.1.2, what are the key > >>>> features > >>>> or advantages. > >>> > >>> > >> > > > > > > > > -- > > Harsh J > > > > > -- > Marcos Ortiz Valmaseda > Product Manager at PDVSA > http://about.me/marcosortiz >
