Reply-To: user@hive.apache.org user@hive.apache.org
Date: Monday, August 5, 2013 9:41 AM
To: user@hive.apache.org user@hive.apache.org
Subject: Re: Hive UDAF extending UDAF class: iterate or evaluate method
Hi Lefty,
I used the wiki you sent to write my first version of UDAF. However, I
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From: Ritesh Agrawal ragra...@netflix.com
Reply-To: user@hive.apache.org user@hive.apache.org
Date: Monday, August 5, 2013 9:41 AM
To: user@hive.apache.org user@hive.apache.org
Subject: Re: Hive UDAF extending UDAF class: iterate or evaluate method
: Wednesday, August 7, 2013 5:57 PM
To: user@hive.apache.orgmailto:user@hive.apache.org
user@hive.apache.orgmailto:user@hive.apache.org
Subject: Re: Hive UDAF extending UDAF class: iterate or evaluate method
Hi Sanjay, Lefty
Thanks for the help but none of above responses directly answering my
Hi Lefty,
I used the wiki you sent to write my first version of UDAF. However, I
found it to be utterly complex, especially for storing partial results as I
am not very familiar with hive API. Then I found another example of UDAF in
the hadoop the definitive guide book and it had much simpler
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.
You might find this wikidoc useful:
GenericUDAFCaseStudyhttps://cwiki.apache.org/confluence/display/Hive/GenericUDAFCaseStudy
.
The O'Reilly book Programming Hive also has a section called
User-Defined Aggregate Functions in chapter 13 (Functions), pages 172 to
176.
-- Lefty
On Sun, Aug 4,
