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 <[email protected]>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 <[email protected] > >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 <[email protected] > > > > 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 > > > > > >
