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From Konstantin Boudnik <...@apache.org>
Subject Re: Rejuvenate Hadoop 0.22 effort
Date Sat, 24 Sep 2011 02:40:05 GMT
I'd say let's take a look at how bad are the problems; what are discrepancies?

Do you have any build links or some such to point to?
  Cos
   
On Fri, Sep 23, 2011 at 05:34PM, Roman Shaposhnik wrote:
> On Fri, Sep 16, 2011 at 2:21 AM, Konstantin Shvachko
> <shv.hadoop@gmail.com> wrote:
> > == TESTING ==
> > 5. I think Steve's idea of integrating 0.22 with Apache BigTop is
> > great. Will be glad to see any steps in this direction.
> 
> The basic integration is done. We can produce fully functional RPM
> and DEB packages for Hadoop 0.22 release.
> 
> This is good news. The bad news is that very few downstream components
> can be compiled against .22. And I'm not talking changes to versions, pom.xml
> and build.xml files. I'm talking API incompatibilities. Pig, Hive, HBase, Mahout
> all need to be modified to support .22. Before that's done -- there's
> little that
> can be done as far as stack validation is concerned.
> 
> Given that work needs to be done in downstream components, I've got 2 questions:
>    1. do we know if the API delta between .22 and .23 is as
> significant as betwen
>    .22 and .20.2?
> 
>    2. what's the common approach downstream to support multiple versions of
>    Hadoop APIs? Or is this even something that can be asked of all the
> components?
> 
> Thanks,
> Roman.

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