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From Elliott Clark <ecl...@apache.org>
Subject Re: Erasure coding in branch-2 [Was Re: [VOTE] Merge HDFS-7285 (erasure coding) branch to trunk]
Date Thu, 05 Nov 2015 00:17:02 GMT
I don't really see the difference between 2.9 with a ton of scary changes
(EC is a lot more NN stuff than a usual release) and a 3.0.
What's the downside of getting a major version. It relaxes the compat a
little bit. It would allow some bake time before it's stable.

Put another way.  I'm upgrading our prod clusters to 2.7 now and 2.8 when
it comes out. That's because those releases are normal dot releases.
I would hold off a much longer time for a 2.9 with EC.

That to me really signals that it's a different type of release and that
should be messaged with a major version rev.

On Wed, Nov 4, 2015 at 4:06 PM, Andrew Purtell <andrew.purtell@gmail.com>
wrote:

> Yes we can mostly likely help you. Please come over to dev@bigtop.
>
>
> > On Nov 4, 2015, at 12:40 PM, Andrew Wang <andrew.wang@cloudera.com>
> wrote:
> >
> > We used to get help from Bigtop when it comes to integration testing. Do
> we
> > think that's possible for 2.8?
> >
> > On Wed, Nov 4, 2015 at 10:08 AM, Steve Loughran <stevel@hortonworks.com>
> > wrote:
> >
> >>
> >>>> On 2 Nov 2015, at 23:11, Vinod Vavilapalli <vinodkv@hortonworks.com>
> >>> wrote:
> >>>
> >>> Yes, I’ve already started looking at 2.8.0, that is exactly how I ended
> >> up with this discussion on the state of EC.
> >>>
> >>> +Vinod
> >>>
> >>>
> >>>> On Nov 2, 2015, at 3:02 PM, Haohui Mai <ricetons@gmail.com<mailto:
> >>> ricetons@gmail.com>> wrote:
> >>>
> >>> Is it a good time to start the discussion on the issues of releasing
> 2.8?
> >>
> >> Before rushing to release 2.8, people should be trying in downstream
> apps
> >> today,. As well as identifying hdfs-client related issues, I've just
> >> discovered that the MiniYARNCluster has added lots of stack traces
> >> (YARN-4330), and I'm sure there are other regressions.
> >>
> >> It's generally not that hard to take a downstream project and try to
> build
> >> with a hadoop version of 2.8.0-SNAPSHOT; compilation and classpath
> problems
> >> will show up immediately; unit test regressions can be at least
> identified
> >> by switching between 2.7.1 and 2.8.0-SNAPSHOT.
>

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