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Date: Wed, 1 Feb 2012 22:52:12 -0800
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Subject: Re: a newbie question
From: Peter S <htims.rm.p@gmail.com>
To: hdfs-dev@hadoop.apache.org
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Clear enough for me to understand.

Thanks a lot, Harsh!

Peter

On Wed, Feb 1, 2012 at 9:05 PM, Harsh J <harsh@cloudera.com> wrote:

> Hi,
>
> On Thu, Feb 2, 2012 at 10:15 AM, Peter S <htims.rm.p@gmail.com> wrote:
> > Hi Harsh,
> >
> > Thanks a lot for the reply.  Some questions are inline.
> >
> > On Wed, Feb 1, 2012 at 8:31 PM, Harsh J <harsh@cloudera.com> wrote:
> >
> >> Peter,
> >>
> >> (Inline)
> >>
> >> On Thu, Feb 2, 2012 at 3:06 AM, Peter S <htims.rm.p@gmail.com> wrote:
> >> > I realize the version numbers are actually different branches, e.g.
> >> > branch-0.21, branch-0.22, branch-0.23, and trunk. I am wondering which
> >> > branch should I use and develop on? Which one is most stable?
> >>
> >> All new work is to go to trunk (presently numbered as 0.24).
> >
> > Then how about 1.0.*?  It seems in the beta version. But why trunk number
> > is still 0.24?
>
> 1.0 is a rename of the 0.20 line, its not > 0.21+. Other branches will
> be renamed eventually, but the rename has not happened yet. Agree its
> confusing, but perhaps the illustrations on
> http://www.cloudera.com/blog/2012/01/an-update-on-apache-hadoop-1-0/
> and https://blogs.apache.org/bigtop/entry/all_you_wanted_to_know will
> help you understand completely.
>
> >> The page at http://wiki.apache.org/hadoop/HowToContribute goes over
> >> setting up the trunk development workspace and should help you get
> >> started.
> >>
> >> What do you mean by "most stable"? Do you ask in terms of build
> stability?
> >>
> > I mean in production.  From the release page:
> > "
> > 0.20.X - legacy stable version
> > 0.20.203.X - current stable version
> > 1.0.X - current beta version, 1.0 release
> > 0.22.X - does not include security
> > 0.23.X - current alpha version
> > "
> > I don't quite get this. Why 0.23.X is in alpha version, but 1.0.X is in
> > beta version? And the 0.22.X doesn't include security. How does this
> > release number work?
> >
> > For Cloudera version, will all the patches in CDH also in 1.0.X?
>
> I think my previous comment should cover these questions. Its a
> chaotic series of numbers after the rename happened partially, but the
> numbering will stabilize soon.
>
> Also, best to ask CDH specific questions over its active user forums
> at https://groups.google.com/a/cloudera.org/group/cdh-user/topics
>
> >> > For hadoop common repo, which version should I use for a particular
> hdfs
> >> > version?
> >>
> >> Don't quite get this question.
> >>
> > Because common repo and hdfs repo is separate, is it possible to have
> some
> > incompatibility between the two.
>
> The project was all merged back recently, you only need to use the
> hadoop-common repository:
>
> i.e. Use http://svn.apache.org/repos/asf/hadoop/common/trunk/ (or)
> https://github.com/apache/hadoop-common /
> http://git.apache.org/hadoop-common.git
>
> --
> Harsh J
> Customer Ops. Engineer
> Cloudera | http://tiny.cloudera.com/about
>

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