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From 张铎(Duo Zhang) <palomino...@gmail.com>
Subject Re: [DISCUSS] Bump hadoop versions
Date Sat, 04 Jan 2020 15:01:40 GMT
Anyway if we want to start releasing 3.x alpha versions, at least we need
to have a release manager... Dang

Andrew Purtell <andrew.purtell@gmail.com> 于2020年1月4日周六 上午11:38写道:

> Releasing HBase 3 snapshots off master would be fine by me.
>
> > On Jan 3, 2020, at 7:37 PM, Sean Busbey <busbey@apache.org> wrote:
> >
> > A while back I offered to start making hbase 3 alpha releases so we had
> > something we could all refer to in test environments. That offer still
> > stands.
> >
> >
> > I personally would still rather those releases be off of the master
> branch
> > because we still have too many branches given our tooling for backports.
> >
> >> On Fri, Jan 3, 2020, 21:30 Andrew Purtell <andrew.purtell@gmail.com>
> wrote:
> >>
> >> Why not start a branch-3 and begin SNAPSHOT releasing of this branch
> right
> >> now?
> >>
> >> +1 to dropping Hadoop 2 support in HBase 3. We need the major increment
> to
> >> make this kind of change, let’s take the opportunity.
> >>
> >> Regarding Hadoop 2, the discussion I have seen indicates Hadoop thinks
> it
> >> will be releasing 2.x for up to two more years. I don’t know how many
> >> releases there will actually be but let’s assume at least one more 2.9,
> and
> >> a few 2.10. My employer is expected to use these versions along a
> >> transition path to 3.x for at least the next eighteen months. We are
> >> probably typical. We won’t need Hadoop 2 support for a HBase 3 but will
> >> need it for HBase 1 and HBase 2 for “a couple years”.
> >>
> >>>> On Jan 3, 2020, at 6:52 PM, Sean Busbey <busbey@apache.org> wrote:
> >>>
> >>> I personally like having Hadoop 2 support still, but I agree the
> cadence
> >>> out of Hadoop has been problematic.
> >>>
> >>> I would prefer we not change the state of Hadoop support in the master
> >>> branch until we have a release plan of some kind for HBase 3. I'd
> rather
> >>> that be sooner rather than later.
> >>>
> >>>> On Fri, Jan 3, 2020, 18:08 张铎(Duo Zhang) <palomino219@gmail.com>
> wrote:
> >>>>
> >>>> Support Hadoop 2.x in 3.0.0 means we need to carry it over the whole
> 3.x
> >>>> release lines, which seems to be a problem since the Hadoop community
> do
> >>>> not want to new 2.x release line any more...
> >>>>
> >>>> Nick Dimiduk <ndimiduk@gmail.com>于2020年1月4日 周六06:55写道:
> >>>>
> >>>>> On Wed, Dec 25, 2019 at 5:38 PM 张铎(Duo Zhang) <palomino219@gmail.com
> >
> >>>>> wrote:
> >>>>>
> >>>>>> We will only remove the hadoop 2.x support from hbase 3.x, which
> does
> >>>> not
> >>>>>> have a formal release plan yet, for 2.x we will still support
hadoop
> >>>> 2.x.
> >>>>>>
> >>>>>
> >>>>> Indeed there is no formal release plan for HBase-3.0, but I hope
it's
> >>>>> sooner than 2+ years away! What's the motivation for dropping Hadoop2
> >>>>> support?
> >>>>>
> >>>>> Wei-Chiu Chuang <weichiu@apache.org> 于2019年12月26日周四
上午8:57写道:
> >>>>>>
> >>>>>>> With my Hadoop hat's on, we have not yet officially declared
Hadoop
> >>>> 2.8
> >>>>>>> EOL. I think the 2.8 download missing from the web page
is just a
> >>>>>> mistake.
> >>>>>>>
> >>>>>>> That being said, some of the biggest Hadoop users (LinkedIn,
Yahoo,
> >>>>>>> Microsoft) that I am aware of are moving up from 2.7/2.8
to 2.10,
> and
> >>>>>> that
> >>>>>>> 2.8.5 (the last version in the 2.8 line) was released in
Sep 2018,
> >>>> more
> >>>>>>> than a year ago. It doesn't look like the community has
the desire
> to
> >>>>>>> continue the 2.8 line.
> >>>>>>>
> >>>>>>> I think it is a little extreme to remove hadoop2 profile,
given
> that
> >>>>>> Hadoop
> >>>>>>> 2.9 and 2.10 are still active and I expect Hadoop 2 to stay
around
> >>>> for
> >>>>> at
> >>>>>>> least 2 years out.
> >>>>>>>
> >>>>>>> On Thu, Dec 26, 2019 at 8:41 AM 张铎(Duo Zhang) <
> palomino219@gmail.com
> >>>>>
> >>>>>>> wrote:
> >>>>>>>
> >>>>>>>> Hadoop 2.8.x has been removed from the download page
of hadoop so
> I
> >>>>>> think
> >>>>>>>> it is time to bump the hadoop dependency to 2.9.x, on
master an
> >>>>>> branch-2.
> >>>>>>>>
> >>>>>>>> And the hadoop community is going to make 2.10.x the
last minor
> >>>>> release
> >>>>>>>> line for 2.x
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>
> >>>>>>
> >>>>>
> >>>>
> >>
> https://lists.apache.org/thread.html/cab84265d632b90d66dcd1ad957a7439a2c76a987c7e62feafb4812e%40%3Ccommon-dev.hadoop.apache.org%3E
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> I think this is a sign that the community is moving
forward to
> 3.x.
> >>>>> So
> >>>>>> I
> >>>>>>>> propose we make the master branch hadoop3 only, This
requires
> >>>>> changing
> >>>>>>> the
> >>>>>>>> pom a bit to active hadoop3 profile by default and remove
the
> >>>> hadoop2
> >>>>>>>> profile.
> >>>>>>>>
> >>>>>>>> Thoughts? Thanks.
> >>>>>>>>
> >>>>>>>
> >>>>>>
> >>>>>
> >>>>
> >>
>

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