On Oct 21, 2011, at 10:07 AM, Mayuresh wrote: > Hi, > > I am trying to understand the exact code flow of how the percentile_approx > function works.... What happens step by step. Is there some write up which > would help understanding the architecture? I am looking to understand how to > add new functions to hive. >
This doc covers a similar UDAF: https://cwiki.apache.org/confluence/display/Hive/GenericUDAFCaseStudy JVS
