On Fri, Apr 20, 2012 at 7:28 AM, Daryn Sharp <da...@yahoo-inc.com> wrote:
> 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 think blocking the release of a non-alpha on this feature is a bit nutty. Not to undermine the work, but it only affects users who run security and want to be able to move a NN/JT from one IP to another without killing currently running jobs. Only a small fraction of the user base enables security at all, and an even smaller fraction regularly wants to migrate a master to a new IP mid-job. > > 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. > I'd call it a minor feature. -Todd > > 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 <a...@hortonworks.com> > 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 <a...@hortonworks.com> > 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/ > > > > > > -- Todd Lipcon Software Engineer, Cloudera
