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From Vinod Kumar Vavilapalli <vino...@apache.org>
Subject Re: Thinking ahead to hadoop-2.6
Date Thu, 25 Sep 2014 02:30:45 GMT
Thank for restarting this, Arun!

The following are the efforts that I am involved in directly or indirectly
and shepherding from YARN's point of view: rolling-upgrades (YARN-666),
work-preserving RM restart (YARN-556), minimal long-running services
support (YARN-896), including service-registry (YARN-913), timeline-service
stability/security (some sub-tasks of YARN-1935), node labels (YARN-296)
and some enhancements/bug fixes in cpu-scheduling/cgroups. We also have
reservations sub-system (YARN-1051) and  YARN shared cache (YARN-1492) that
I would like to get in and helping reviews with. Almost all these efforts
are on the edge of completion - some of them are just pending reviews.
Clearly some of them will be more stable than others, some of them make it
eventually, some may not.

+1 for branching it within a week so that we can stabilize it and let other
features go into branch-2, I am putting out all the stops to get the above
YARN efforts to be in reasonable shape for 2.6.

Regarding remaining items that I haven't paid much attention, NM restart
effort - mostly done by Jason Lowe - YARN-1336 is all in. YARN-291,
YARN-18, YARN-1964 are not going to cut from what I see.

I edited the road-map to reflect this latest reality.

+Vinod

On Tue, Sep 23, 2014 at 3:03 PM, Arun Murthy <acm@hortonworks.com> wrote:

> Looks like most of the content is in and hadoop-2.6 is shaping up nicely.
>
> I'll create branch-2.6 by end of the week and we can go from there to
> stabilize it - hopefully in the next few weeks.
>
> Thoughts?
>
> thanks,
> Arun
>
> On Tue, Aug 12, 2014 at 1:34 PM, Arun C Murthy <acm@hortonworks.com>
> wrote:
>
> > Folks,
> >
> >  With hadoop-2.5 nearly done, it's time to start thinking ahead to
> > hadoop-2.6.
> >
> >  Currently, here is the Roadmap per the wiki:
> >
> >         • HADOOP
> >                 • Credential provider HADOOP-10607
> >         • HDFS
> >                 • Heterogeneous storage (Phase 2) - Support APIs for
> using
> > storage tiers by the applications HDFS-5682
> >                 • Memory as storage tier HDFS-5851
> >         • YARN
> >                 • Dynamic Resource Configuration YARN-291
> >                 • NodeManager Restart YARN-1336
> >                 • ResourceManager HA Phase 2 YARN-556
> >                 • Support for admin-specified labels in YARN YARN-796
> >                 • Support for automatic, shared cache for YARN
> application
> > artifacts YARN-1492
> >                 • Support NodeGroup layer topology on YARN YARN-18
> >                 • Support for Docker containers in YARN YARN-1964
> >                 • YARN service registry YARN-913
> >
> >  My suspicion is, as is normal, some will make the cut and some won't.
> > Please do add/subtract from the list as appropriate. Ideally, it would be
> > good to ship hadoop-2.6 in a 6-8 weeks (say, October) to keep up a
> cadence.
> >
> >  More importantly, as we discussed previously, we'd like hadoop-2.6 to be
> > the *last* Apache Hadoop 2.x release which support JDK6. I'll start a
> > discussion with other communities (HBase, Pig, Hive, Oozie etc.) and see
> > how they feel about this.
> >
> > thanks,
> > Arun
> >
> >
>
>
> --
>
> --
> Arun C. Murthy
> Hortonworks Inc.
> http://hortonworks.com/
>
> --
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