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From Priyanka Gugale <pri...@apache.org>
Subject Re: Bleeding edge branch ?
Date Tue, 12 Jul 2016 06:12:25 GMT
+1 for creating such branch.
One of us will have to rebase it with master branch at intervals. I don't
think everyone will cherry-pick their commits here. We can make it once in
a month activity. Are we considering updating all dependency library
version as well?

-Priyanka

On Tue, Jul 12, 2016 at 2:34 AM, Munagala Ramanath <ram@datatorrent.com>
wrote:

> Following up on some comments, wanted to clarify what I have in mind for
> this branch:
>
> 1. The main goal is to stay up-to-date with new releases, so if a question
> of the form
>     "A new release of X is available, should we upgrade ?" comes up, the
> answer is
>     *always* an *emphatic* yes; otherwise it doesn't bleed enough (:-) as
> Sanjay points out.
> 2. Pull requests are submitted as always; there is no requirement to
> generate an additional
>     pull requests against this branch. It may get merged/cherry-picked
> depending on who has the
>    time and inclination to do it.
> 3. There is no expectation of dedication of any additional resources, so
> people work on
>     it as and when time is available. ("No guarantee" means exactly that).
> So there is no
>     question of "maintaining" this branch.
> 4. This branch is not to be encumbered with legacy and/or backward
> compatibility issues.
> 5. This branch is not an experimental sandbox to try out new algorithms,
> architectural changes
>     and other such changes.
>
> As always, I'm open to other ideas, but that is what I had in mind when I
> made the suggestion.
>
> Ram
>
>
>
> On Mon, Jul 11, 2016 at 1:45 PM, Sanjay Pujare <sanjay@datatorrent.com>
> wrote:
>
> > As the name suggests the "bleeding-edge" branch ideally should use
> bleeding
> > edge versions so I would like to see Java 8 used there (and Hadoop 3 when
> > it does eventually come out) to make the maintenance effort worthwhile...
> >
> > On Mon, Jul 11, 2016 at 12:05 PM, David Yan <david@datatorrent.com>
> wrote:
> >
> > > I'm -0 on Java 8, but I'm +1 on the rest, and I'm especially strong +1
> > for
> > > upgrading the Hadoop dependency version.
> > >
> > > Here are my reasons:
> > >
> > > - Hadoop 3 will require Java 8, but Hadoop 2.7.2 still supports Java 7
> > and
> > > there will probably be some time (I'm guessing more than one year) for
> > > Hadoop 3 to become GA and for major distros to support Hadoop 3. The
> > > maintenance effort for having two branches, one for Java 7 and one for
> > Java
> > > 8 is not worth it at this time.
> > >
> > > - Apex currently uses Hadoop 2.2 dependencies, marked "provided". And
> > > Hadoop 2.4 has been released more than two years ago, and it added a
> lot
> > of
> > > features in the API that Apex can make use of. Most distros already
> > bundle
> > > Hadoop 2.6 or later. Although some old versions of Cloudera that
> include
> > > hadoop version earlier than 2.4 still have not reached end-of-life yet,
> > the
> > > number of users using those old versions is probably very small.
> > >
> > > David
> > >
> > >
> > > On Mon, Jul 11, 2016 at 8:59 AM, Munagala Ramanath <
> ram@datatorrent.com>
> > > wrote:
> > >
> > > > We've had a number of issues recently related to dependencies on old
> > > > versions
> > > > of various packages/libraries such as Hadoop itself, Google guava,
> > > > HTTPClient,
> > > > mbassador, etc.
> > > >
> > > > How about we create a "bleeding-edge" branch in both Core and Malhar
> > > which
> > > > will use the latest versions of these various dependencies, upgrade
> to
> > > Java
> > > > 8 so
> > > > we can use the new Java features, etc. ?
> > > >
> > > > This will give us an opportunity to discover these sorts of problems
> > > early
> > > > and,
> > > > when we are ready to pull the trigger for a major version, we have a
> > > branch
> > > > ready
> > > > for merge with, hopefully, minimal additional effort.
> > > >
> > > > There will be no guarantees w.r.t. this branch so people using it use
> > it
> > > at
> > > > their own
> > > > risk.
> > > >
> > > > Ram
> > > >
> > >
> >
>

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