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From Suresh Srinivas <sur...@hortonworks.com>
Subject Re: Next releases
Date Fri, 06 Dec 2013 18:43:05 GMT
Arun,

I propose the following changes for 2.3:
- There have been a lot of improvements related to supporting http policy.
- There is a still discussion going on, but I would like to deprecate
BackupNode in 2.3 as well.
- We are currently working on rolling upgrades related change in HDFS. We
might add a couple of changes that enables rolling upgrades from 2.3
onwards (hopefully we can this done by December)

I propose the following for 2.4 release, if they are tested and stable:
- Heterogeneous storage support - HDFS-2832
- Datanode cache related change - HDFS-4949
- HDFS ACLs - HDFS-4685
- Rolling upgrade changes

Let me know if you want me to update the wiki.

Regards,
Suresh



On Thu, Nov 7, 2013 at 6:42 PM, Arun C Murthy <acm@hortonworks.com> wrote:

> Gang,
>
>  Thinking through the next couple of releases here, appreciate f/b.
>
>  # hadoop-2.2.1
>
>  I was looking through commit logs and there is a *lot* of content here
> (81 commits as on 11/7). Some are features/improvements and some are fixes
> - it's really hard to distinguish what is important and what isn't.
>
>  I propose we start with a blank slate (i.e. blow away branch-2.2 and
> start fresh from a copy of branch-2.2.0)  and then be very careful and
> meticulous about including only *blocker* fixes in branch-2.2. So, most of
> the content here comes via the next minor release (i.e. hadoop-2.3)
>
>  In future, we continue to be *very* parsimonious about what gets into a
> patch release (major.minor.patch) - in general, these should be only
> *blocker* fixes or key operational issues.
>
>  # hadoop-2.3
>
>  I'd like to propose the following features for YARN/MR to make it into
> hadoop-2.3 and punt the rest to hadoop-2.4 and beyond:
>  * Application History Server - This is happening in  a branch and is
> close; with it we can provide a reasonable experience for new frameworks
> being built on top of YARN.
>  * Bug-fixes in RM Restart
>  * Minimal support for long-running applications (e.g. security) via
> YARN-896
>  * RM Fail-over via ZKFC
>  * Anything else?
>
>  HDFS???
>
>  Overall, I feel like we have a decent chance of rolling hadoop-2.3 by the
> end of the year.
>
>  Thoughts?
>
> thanks,
> Arun
>
>
> --
> Arun C. Murthy
> Hortonworks Inc.
> http://hortonworks.com/
>
>
>
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