Re: Migration Path for 0.90 to 0.91

[Gary Helmling <gh...@gmail.com>]

Data migration would only be necessary if there are file format changes,
which I don't believe there are any at the moment.  But you can't really be
certain about that until we get closer to a release of 0.92.

The coprocessor feature does break RPC protocol compatibility, so you will
have to do a full HBase cluster restart when upgrading 0.90.x -> 0.92.
That's about all I can say with certainty at the moment.


On Wed, Mar 30, 2011 at 12:35 PM, Nichole Treadway <kn...@gmail.com>wrote:

> No I was wondering about 0.91 actually....we are interested in the
> Coprocessor code there but have a development cluster running 0.90.1 right
> now.
>
> On Wed, Mar 30, 2011 at 3:27 PM, Jean-Daniel Cryans <jdcryans@apache.org
> >wrote:
>
> > Are you talking about 0.90.1? 0.91.0 is far from being released so I
> > guess it can't be it.
> >
> > 0.90.1 it's a minor revision, it's supposed to be forward and backward
> > compatible so code compiled against 0.90.0 should work on 0.90.1 (if
> > not then it's a bug).
> >
> > J-D
> >
> > On Wed, Mar 30, 2011 at 12:22 PM, Nichole Treadway <kntreadway@gmail.com
> >
> > wrote:
> > > All,
> > >
> > > Is there a migration path for upgrading between 0.90 and 0.91? Do we
> need
> > to
> > > do data migration?
> > >
> > > Thank you,
> > > Nichole
> > >
> >
>