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Date: Thu, 20 Feb 2014 14:01:43 -0800
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 <CADdVdVF2uea4SbV1b=yqaAxiYCqU2-apHjLQvxHmivuajkwRHw@mail.gmail.com>
Subject: Re: Thinking ahead to 2.4
From: Suresh Srinivas <suresh@hortonworks.com>
To: "hdfs-dev@hadoop.apache.org" <hdfs-dev@hadoop.apache.org>
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Arun,

Some of the previously 2.4 targeted features were made available in 2.3:
- Heterogeneous storage support
- Datanode cache

The following are being targeted for 2.4:
- Use protobuf for fsimge (already in)
- ACLs (in trunk. In a week or so, this will be merged to branch-2.4)
- Rolling upgrades (last bunch of jiras being worked in feature branch.
Will be in 2.4 in around two weeks. Currently testing is in progress)

So HDFS features should be ready in two weeks.


On Sat, Feb 15, 2014 at 4:47 PM, Azuryy <azuryyyu@gmail.com> wrote:

> Hi=EF=BC=8C
> I think you omit some key pieces in 2.4
>
> Protobuf fsimage, rolling upgrade are also targeting 2.4
>
>
>
> Sent from my iPhone5s
>
> > On 2014=E5=B9=B42=E6=9C=8816=E6=97=A5, at 6:59, Arun C Murthy <acm@hort=
onworks.com> wrote:
> >
> > Folks,
> >
> > With hadoop-2.3 nearly done, I think it's time to think ahead to
> hadoop-2.4. I think it was a good idea to expedite release of 2.3 while w=
e
> finished up pieces that didn't make it in such as HDFS Caching & Support
> for Heterogenous Storage.
> >
> > Now, most of the key pieces incl. Resource Manager Automatic Failover
> (YARN-149), Application History Server (YARN-321) & Application Timeline
> Server (YARN-1530) are either complete or very close to done, and I think
> we will benefit with an extended test-cycle for 2.4 - similar to what
> happened with 2.2. To provide some context: 2.2 went through nearly 6 wee=
ks
> of extended testing and it really helped us push out a very stable releas=
e.
> >
> > I think it will be good to create a 2.4 branch ASAP and start testing.
> As such, I plan to cut the branch early next week. With this, we should b=
e
> good shape sometime to release 2.4 in mid-March.
> >
> > I've updated https://wiki.apache.org/hadoop/Roadmap to reflect this.
> >
> > Also, we should start thinking ahead to 2.5 and what folks would like t=
o
> see in it. If we continue our 6-week cycles, we could shoot to get that o=
ut
> in April.
> >
> > Thoughts?
> >
> > thanks,
> > Arun
> >
> >
> > --
> > Arun C. Murthy
> > Hortonworks Inc.
> > http://hortonworks.com/
> >
> >
> >
> > --
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