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From Andrew Wang <andrew.w...@cloudera.com>
Subject Re: Thinking ahead to hadoop-2.6
Date Tue, 23 Sep 2014 23:26:27 GMT
I think we should delay cutting the branch beyond the end of the week then,
seeing as the HDFS-6581 merge vote (assuming it goes through) doesn't close
until 12am on Tuesday next week. Archival storage is also still finishing
up user APIs and I had a few other q's posted on HDFS-7081, so again might
not make it by the end of the week.

I don't think it'd be too bad to retarget these to 2.7 though, since Arun
said he plans to roll 2.7 shortly after 2.6. I think a few more weeks would
really seal the deal.

Thanks,
Andrew

On Tue, Sep 23, 2014 at 4:00 PM, Suresh Srinivas <suresh@hortonworks.com>
wrote:

> I actually would like to see both archival storage and single replica
> memory writes to be in 2.6 release. Archival storage is in the final stages
> of getting ready for branch-2 merge as Nicholas has already indicated on
> the dev mailing list. Hopefully HDFS-6581 gets ready sooner. Both of these
> features are being in development for sometime.
>
> On Tue, Sep 23, 2014 at 3:27 PM, Andrew Wang <andrew.wang@cloudera.com>
> wrote:
>
> > Hey Arun,
> >
> > Maybe we could do a quick run through of the Roadmap wiki and
> add/retarget
> > things accordingly?
> >
> > I think the KMS and transparent encryption are ready to go. We've got a
> > very few further bug fixes pending, but that's it.
> >
> > Two HDFS things that I think probably won't make the end of the week are
> > archival storage (HDFS-6584) and single replica memory writes
> (HDFS-6581),
> > which I believe are under the HSM banner. HDFS-6484 was just merged to
> > trunk and I think needs a little more work before it goes into branch-2.
> > HDFS-6581 hasn't even been merged to trunk yet, so seems a bit further
> off
> > yet.
> >
> > Just my 2c as I did not work directly on these features. I just generally
> > shy away from shipping bits quite this fresh.
> >
> > Thanks,
> > Andrew
> >
> > 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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