On Thu, Mar 10, 2011 at 8:27 PM, Christopher, Pat <patrick.christop...@hp.com> wrote: > Hi Guys, > > I’m writing a UDAF to run against hive 0.5 or hive 0.7. The documentation I > can find says to implement UDAFEvaluator and ensure that you implement > init() , aggregate() and evaluate(). However, all of the examples I can > find implement init(), iterate(), merge(), terminatePartial() and > terminate(). > > > > What’s the difference and where I can find the documentation on how to write > a UDAF? > > > > Thanks, > > Pat
At time the documentation may lag behind the code. I would checkout the hive source code for the version you are working with and base your work on other already existing UDAF's that are similar. Edward
