Type: New Feature
Fix Version/s: 0.8 beta 1
As discussed at the Digg-hosted hackathon.
First off, this needs a better name, the idea isn't exactly like coprocessors from BigTable and this entry should be considered a stub for now (Stu and Marius should be able to provide more details).
The idea is that for mutation operations, we should all the user to run a routine that has access to the "old" version of the data and the "new" version, and can take action.
At a bare minimum, this should be capable of implementing distributed secondary indexes.