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From Jean-Marc Spaggiari <jean-m...@spaggiari.org>
Subject Re: Default hadoop version for 0.94?
Date Thu, 17 Oct 2013 22:39:27 GMT
Excellent. Thanks Ted.


2013/10/17 Ted Yu <yuzhihong@gmail.com>

> bq.  Will that make anything faster to have 1.2 as the default version
> instead of 1.0?
>
> You can get to release notes from this thread:
> http://search-hadoop.com/m/pFao2kKHDm1
>
> A few examples:
>
> MAPREDUCE-5368 <https://issues.apache.org/jira/browse/MAPREDUCE-5368>.
> Major improvement reported by zhaoyunjiong and fixed by zhaoyunjiong (mrv1)
> *Save memory by set capacity, load factor and concurrency level for
> ConcurrentHashMap in TaskInProgress*
> *
> *
> HADOOP-8971 <https://issues.apache.org/jira/browse/HADOOP-8971>. Major
> improvement reported by gopalv and fixed by gopalv (util)
> *Backport: hadoop.util.PureJavaCrc32 cache hit-ratio is low for static data
> (HADOOP-8926)**
> *
>
>
> On Thu, Oct 17, 2013 at 11:58 AM, Jean-Marc Spaggiari <
> jean-marc@spaggiari.org> wrote:
>
> > I think also we should be able to compile against v1 if required. Don't
> > think we should remove the related code yet. Might be on the roadmap, but
> > most probably to soon to do that.  I'm not +1 because that will impact me
> > ;) But can't be -1 (anyway, who cares, I'm not commiter ;)  )
> >
> > Just one question, that is this going to give us? Will that make anything
> > faster to have 1.2 as the default version instead of 1.0?
> >
> >
> > 2013/10/17 Andrew Purtell <apurtell@apache.org>
> >
> > > +1, if the current default version of 1 we build against can't even be
> > > downloaded except from the archives, that's not good.
> > >
> > >
> > > On Thu, Oct 17, 2013 at 11:15 AM, Nick Dimiduk <ndimiduk@gmail.com>
> > wrote:
> > >
> > > > +1 from me as well. Keep on moving forward.
> > > >
> > > > Does this mean we can delete some old API compatibility code soon? I
> <3
> > > > deleting code ;)
> > > >
> > > >
> > > > On Thu, Oct 17, 2013 at 11:09 AM, lars hofhansl <larsh@apache.org>
> > > wrote:
> > > >
> > > > > So this is a resounding: "Maybe"? :)
> > > > >
> > > > >
> > > > > I think we should change the default. HBase should be built from
> > source
> > > > > for a specific version of Hadoop anyway.
> > > > >
> > > > > Ted said +1.
> > > > >
> > > > > Any other opinions?
> > > > >
> > > > >
> > > > > -- Lars
> > > > >
> > > > >
> > > > >
> > > > > ________________________________
> > > > >  From: Jean-Marc Spaggiari <jean-marc@spaggiari.org>
> > > > > To: dev <dev@hbase.apache.org>; lars hofhansl <larsh@apache.org>
> > > > > Sent: Wednesday, October 9, 2013 5:13 PM
> > > > > Subject: Re: Default hadoop version for 0.94?
> > > > >
> > > > >
> > > > >
> > > > > That's on my roadmap, but lacking some time for that ;) I bought
a
> > new
> > > > > cluster where I will install Hadoop 1.2.1 or 2.x and replicate my
> > > current
> > > > > cluster to it, but still need some time to do that :(
> > > > >
> > > > > But the issue is not just me. Me, I can deal with that. But maybe
> > > others
> > > > > might be in the same situation?
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > 2013/10/9 lars hofhansl <larsh@apache.org>
> > > > >
> > > > > That's what I was trying to find out :)
> > > > > >You do not want to upgrade to Hadoop 1.2.1?
> > > > > >
> > > > > >
> > > > > >-- Lars
> > > > > >
> > > > > >
> > > > > >
> > > > > >________________________________
> > > > > > From: Jean-Marc Spaggiari <jean-marc@spaggiari.org>
> > > > > >To: dev <dev@hbase.apache.org>; lars hofhansl <larsh@apache.org>
> > > > > >Sent: Wednesday, October 9, 2013 4:04 PM
> > > > > >Subject: Re: Default hadoop version for 0.94?
> > > > > >
> > > > > >
> > > > > >
> > > > > >Hum. I usually just deploy the .jar on my cluster (hadoop 1.0.3)
> > > without
> > > > > >rebuilding anything. Not sure if some others are not doing the
> same.
> > > > That
> > > > > >change will break the compatibility with previous version, no?
> > > > > >
> > > > > >
> > > > > >
> > > > > >2013/10/9 lars hofhansl <larsh@apache.org>
> > > > > >
> > > > > >> Should we default the HBase 0.94 builds to Hadoop 1.2.x
(1.2.1
> > > > > currently)?
> > > > > >> It's the current stable release of the Hadoop. Can't even
> download
> > > > 1.0.4
> > > > > >> anymore unless you navigate to the archive section.
> > > > > >>
> > > > > >> This would just apply to the sample packages in the download
> > section
> > > > for
> > > > > >> HBase. User should really build a targeted version of HBase
to
> > their
> > > > > >> version of Hadoop anyway.
> > > > > >>
> > > > > >> Comments?
> > > > > >>
> > > > > >>
> > > > > >> -- Lars
> > > > > >>
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > > Best regards,
> > >
> > >    - Andy
> > >
> > > Problems worthy of attack prove their worth by hitting back. - Piet
> Hein
> > > (via Tom White)
> > >
> >
>

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