-Re: collect_set question
Sanjay Subramanian 2013-05-17, 19:30
The Hive Programming Book explains how to implement a "collect" function that returns a list (instead of set) of objects…perhaps u can tweak this to return the N number of items in List
From: Robert Li <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>
Reply-To: "[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>" <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>
Date: Friday, May 17, 2013 12:25 PM
To: "[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>" <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>
Subject: collect_set question
For collect_set is it possible to only collect a few elements and then stop? For example
group by user.
For each user, there could be hundreds of timestamps, but I only need 3 or 4 per user. Is there a way to tell collect_set to stop collecting after it's reached a certain number of elements?
Robert Li | Integration and Support Engineer | Kontagent
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