We are on HDP 2.6.5 but would like to use a more recent version of Phoenix,
without upgrading it cluster-wide.

HBase coprocessors can be dynamically deployed (for instance picking up the
coprocessor jar from HDFS) against specific tables. We are wondering
whether this would be a route to using a newer version of Phoenix against a
set of tables? We are unclear if there would be unwanted side-effects.

I'd be really interested to know if anyone has attempted this with success
or otherwise.

Thanks in advance.

-- 
Owen Rees-Hayward
07912 876046
twitter.com/owen4d