Hi all, I am trying to write a UDAF function. I found an example that shows how to implement a UDAF in "Hadoop The Definitive Guide" book. However I am little confused. In the book, the author extends UDAF class and implements init, iterate, terminatePartial, merge and terminate function. However looking at the hive docs (http://hive.apache.org/docs/r0.11.0/api/org/apache/hadoop/hive/ql/exec/UDAF.html), it seems I need to implement init, aggregate, evaluatePartial, aggregatePartial and evaluate function. Please let me know what are the write functions to implement.
Ritesh
