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From Vova Galchenko <v...@box.com>
Subject Re: Phoenix 4 to 5 Upgrade Path
Date Fri, 14 Jun 2019 06:07:26 GMT
Hey Josh,

thanks for getting back to me. The current Phoenix version we're on is
4.14.1. Do I understand correctly that the Phoenix community intends to
provide data compatibility at least two versions back? Does this intention
apply across major version boundaries? More specifically, does it imply
that data produced by 4.14.1 is intended to be compatible with 4.14.2 and
5.0.0?

Thank you.

vova

On Wed, Jun 12, 2019 at 1:18 PM Josh Elser <elserj@apache.org> wrote:

> What version of Phoenix 4 are you coming from?
>
> Of note, if you're lagging far behind, you'll get bit by the column
> encoding turning on by default in 4.10 [1]
>
> In general, before we update the system catalog table, we take a
> snapshot of it, so you can roll back (although this would be manual). In
> terms of testing as a community, we only do testing back two releases.
> After that, your mileage may vary.
>
> - Josh
>
> [1] https://phoenix.apache.org/columnencoding.html
>
> On 6/11/19 9:02 PM, Vova Galchenko wrote:
> > Hello Phoenix Users List!
> >
> > We at Box are thinking about the upgrade story from Phoenix 4 to 5. As
> > part of that, we'd like to understand if these Phoenix versions write
> > data in formats compatible with each other. In other words, suppose we
> > have an HBase 1.4 cluster used by Phoenix 4. Can I shut everything down,
> > upgrade HBase to 2.0 and Phoenix to 5, start everything up again, and
> > expect to preserve the integrity of the data stored in the original
> > cluster? If not, is there guidance for what the upgrade process might
> > look like?
> >
> > Thanks,
> >
> > vova
>

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