I believe it's premature to release a non-alpha. branch-2.0 does not contain a full working implementation of host-based tokens that was introduced in 1.x (yes, it was done out of order...). This is a very important feature that prevents tokens from being invalidated when a host's ip changes. The token implementation in 2.0 requires daemons to be restarted and/or jobs resubmitted when the ip of an NN is changed (ex. an upgrade). Host-based tokens prevents the need to restart all cluster that access a remote cluster that is upgraded.
I've been actively working on the yarn side and close to completion. Until that's complete, I feel we should consider 2.x an alpha so there's not an omission of a major feature. Daryn On Apr 19, 2012, at 1:45 PM, Arun C Murthy wrote: > Yep, makes sense - I'll roll an rc0 for 2.0 after. > > However, we should consider whether HDFS protocols are 'ready' for us to > commit to them for the foreseeable future, my sense is that it's a tad early > - particularly with auto-failover not complete. > > Thus, we have a couple of options: > a) Call the first release here as *2.0.0-alpha* version (lots of ASF projects > do this). > b) Just go with 2.0.0 and deem 2.0.x or 2.1.x as the first stable release and > fwd-compatible release later. > > Given this is a major release (unlike something obscure like hadoop-0.23.0) > I'm inclined to go with a) i.e. hadoop-2.0.0-alpha. > > Thoughts? > > Arun > > On Apr 19, 2012, at 12:24 AM, Eli Collins wrote: > >> Hey Arun, >> >> This vote passed a week or so ago, let's make it official? >> >> Also, are you still planning to roll a hadoop-2.0.0-rc0 of branch-2 >> this week? I think we should do that soon, if you're not planning to >> do this holler and I'd be happy to. There's only 1 blocker left >> (http://bit.ly/I55LAd) and it's patch available, I think we should >> role an rc from branch-2 when it's merged. >> >> Thanks, >> Eli >> >> On Thu, Mar 29, 2012 at 4:07 PM, Arun C Murthy <[email protected]> wrote: >>> 0.23.2 is just a small set of bug-fixes on top of 0.23.1 and doesn't have >>> NN HA etc. >>> >>> As I've noted separately, I plan to put out a hadoop-2.0.0-rc0 in a couple >>> weeks with NN HA, PB for HDFS etc. >>> >>> thanks, >>> Arun >>> >>> On Mar 29, 2012, at 3:55 PM, Ted Yu wrote: >>> >>>> What are the issues fixed / features added in 0.23.2 compared to 0.23.1 ? >>>> >>>> Thanks >>>> >>>> On Thu, Mar 29, 2012 at 3:45 PM, Arun C Murthy <[email protected]> >>>> wrote: >>>> >>>>> I've created a release candidate for hadoop-0.23.2 that I would like to >>>>> release. >>>>> >>>>> It is available at: http://people.apache.org/~acmurthy/hadoop-0.23.2-rc0/ >>>>> >>>>> The maven artifacts are available via repository.apache.org. >>>>> >>>>> Please try the release and vote; the vote will run for the usual 7 days. >>>>> >>>>> thanks, >>>>> Arun >>>>> >>>>> -- >>>>> Arun C. Murthy >>>>> Hortonworks Inc. >>>>> http://hortonworks.com/ >>>>> >>>>> >>>>> >>> >>> -- >>> Arun C. Murthy >>> Hortonworks Inc. >>> http://hortonworks.com/ >>> >>> > > -- > Arun C. Murthy > Hortonworks Inc. > http://hortonworks.com/ > >
