Github user JamesRTaylor commented on the issue:
https://github.com/apache/phoenix/pull/192
Thanks for the patch, @anirudha. I like your suggestions, @ankitsinghal.
The RVC approach will be limited (as Ankit mentioned it will not work in all
the cases) and it will be much harder to implement than the approach that Ankit
suggested (i.e. just using a ResultSet).
To simplify things, we can initially not support the previous() operation
(I think it's optional anyway). Also, cursors will not see newly inserted
inserted data, but I think that's ok in an initial implementation too as you
can specify in the metadata that it functions this way.
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