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From Ted Yu <yuzhih...@gmail.com>
Subject Re: hfile 9.4 to 9.6
Date Wed, 23 Jul 2014 02:34:06 GMT
You mean the snapshot(s) taken by the 0.94.x release ?
0.98 release is fully compatible in snapshot directory structure with that
of 0.94

Cheers


On Tue, Jul 22, 2014 at 7:01 PM, Qiang Tian <tianq01@gmail.com> wrote:

> what about snapshot?
>
>
> On Wed, Jul 23, 2014 at 7:49 AM, Guangle Fan <fanguangle@gmail.com> wrote:
>
> > Hi, Ted you are right,  hfiles on 0.94 cluster are v2 by default. I
> > actually don't need the convert tool.
> >
> > To migrate that data to another 0.96 cluster, does it work by copying
> over
> > hfiles ? How to handle the meta data of the table in the new cluster ?
> >
> >
> > On Tue, Jul 22, 2014 at 3:46 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> >
> > > The subject of this thread says '9.4' - I assume you meant '0.94'
> > release.
> > > If so, please make correction in the subject.
> > >
> > > Looking at hbase-default.xml from 0.94 branch:
> > >
> > >   <property>
> > >       <name>hfile.format.version</name>
> > >       <value>2</value>
> > >       <description>
> > >           The HFile format version to use for new files. Set this to 1
> to
> > > test
> > >           backwards-compatibility. The default value of this option
> > should
> > > be
> > >           consistent with FixedFileTrailer.MAX_VERSION.
> > >       </description>
> > >   </property>
> > >
> > > Are you running 0.94 cluster with the above config value being 1 ?
> > >
> > > Cheers
> > >
> > > On Tue, Jul 22, 2014 at 3:27 PM, Guangle Fan <fanguangle@gmail.com>
> > wrote:
> > >
> > > > Ted Thanks for your answer!
> > > >
> > > > Actually that wouldn't convert automatically. The problem is 0.94 is
> > > using
> > > > hfileV1, and that is online cluster that I can't shut down and do
> hbase
> > > > upgrade/check file, thus I can't convert the file to v2. The idea is
> > copy
> > > > over the hfilleV1 to another 0.96 cluster and convert to hfileV2. Any
> > > handy
> > > > tool there I can use to do the convert and hfile loading in the new
> > > > cluster, or you guys have another way to handle this case ?
> Converting
> > to
> > > > sequence files ?
> > > >
> > > >
> > > > On Tue, Jul 22, 2014 at 3:00 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> > > >
> > > > > Guangle:
> > > > > For 0.94 cluster, you can perform major compaction after which your
> > > > HFiles
> > > > > would be converted to HFileV2.
> > > > >
> > > > > Cheers
> > > > >
> > > > >
> > > > > On Tue, Jul 22, 2014 at 1:54 PM, Guangle Fan <fanguangle@gmail.com
> >
> > > > wrote:
> > > > >
> > > > > > Thanks Nick!
> > > > > > For some reason, I can't do a in-place upgrading for the cluster.
> > Is
> > > > > there
> > > > > > a tool there I can use to convert hfileV1 to hfileV2 ?
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > On Tue, Jul 22, 2014 at 1:43 PM, Nick Dimiduk <
> ndimiduk@gmail.com>
> > > > > wrote:
> > > > > >
> > > > > > > Hi Guangle,
> > > > > > >
> > > > > > > Please have a look at the online book, there's a section
on
> > > upgrades.
> > > > > > Also,
> > > > > > > please consider upgrading to 0.98. The 0.96 line is in
minimum
> > > > > > maintenance
> > > > > > > mode and 0.98 is considered the stable/production line.
> > > > > > >
> > > > > > > http://hbase.apache.org/book.html#upgrading
> > > > > > >
> > > > > > > Thanks,
> > > > > > > Nick
> > > > > > >
> > > > > > >
> > > > > > > On Tue, Jul 22, 2014 at 1:24 PM, Guangle Fan <
> > fanguangle@gmail.com
> > > >
> > > > > > wrote:
> > > > > > >
> > > > > > > > Hi, All
> > > > > > > >
> > > > > > > > I have hfiles in HBase 9.4 cluster that I want to
migrate to
> > > HBase
> > > > > 9.6
> > > > > > > > cluster.
> > > > > > > >
> > > > > > > > What's the proper process to handle this ?
> > > > > > > >
> > > > > > > > Regards,
> > > > > > > >
> > > > > > > > Guangle
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

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