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From Dima Spivak <dspi...@cloudera.com>
Subject Re: Accessing different HBase versions from the same JVM
Date Fri, 26 Aug 2016 07:39:33 GMT
Sadly, there is no "easy" way to do it (blame filesystem changes and the
rpc differences, among other things).

A while back, someone posted about how he was able to do a snapshot export
between 0.94 and 0.98 [1] but this is not officially supported. Perhaps
someone else has ideas?

1.
http://mail-archives.apache.org/mod_mbox/hbase-user/201412.mbox/%3CC18855DA-CB0F-4500-8D35-C79F781061BF@digitalenvoy.net%3E

On Friday, August 26, 2016, Enrico Olivelli - Diennea <
enrico.olivelli@diennea.com> wrote:

> Thank you Dima for your quick answer.
>
> Do you think that it would be possible to create a shaded version of the
> 0.94  client (with all the dependencies) and let it live inside the same
> JVM of a pure 1.2.2 client ?
>
> My real need is to copy data from a 0.94 cluster to a new 1.2.2
> installation, but temporary continuing to read from 0.94 in order not to
> provide down time
>
> what is the best way to copy data from a 0.94 cluster to a new cluster of
> different hbase major versions ?
>
> can you give me some link ?
>
> Thanks
> Enrico
>
>
> Il giorno ven, 26/08/2016 alle 00.04 -0700, Dima Spivak ha scritto:
>
> I would say no; 0.94 is not wire compatible with 1.2.2  because the former
> uses Hadoop IPC and the latter uses protocol buffers. Sorry, Enrico.
>
> On Friday, August 26, 2016, Enrico Olivelli - Diennea <
> enrico.olivelli@diennea.com <javascript:;><mailto:
> enrico.olivelli@diennea.com <javascript:;>>> wrote:
>
>
>
> Hi,
> I would like to connect to both a 0.94 hbase cluster and a 1.2.2 hbase
> cluster from the same JVM
> I think that 0.94 client code is not compatible with 1.2.2
>
> do you think it is possible ?
>
> Thank you
>
>
> --
> Enrico Olivelli
> Software Development Manager @Diennea
> Tel.: (+39) 0546 066100 - Int. 925
> Viale G.Marconi 30/14 - 48018 Faenza (RA)
>
> MagNews - E-mail Marketing Solutions
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> Diennea - Digital Marketing Solutions
> http://www.diennea.com
>
>
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>
>
>
>
> --
> Enrico Olivelli
> Software Development Manager @Diennea
> Tel.: (+39) 0546 066100 - Int. 925
> Viale G.Marconi 30/14 - 48018 Faenza (RA)
>
> MagNews - E-mail Marketing Solutions
> http://www.magnews.it
> Diennea - Digital Marketing Solutions
> http://www.diennea.com
>
>
> ________________________________
>
> Iscriviti alla nostra newsletter per rimanere aggiornato su digital ed
> email marketing! http://www.magnews.it/newsletter/
>
> The information in this email is confidential and may be legally
> privileged. If you are not the intended recipient please notify the sender
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-- 
-Dima

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