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From John Pullokkaran <>
Subject Re: Cost based optimization
Date Thu, 25 Jun 2015 21:45:14 GMT
Hive does look in to alternate join orders and pick the best plan that minimizes cost.
It uses a greedy algorithm to enumerate plan space.


From: Raajay <<>>
Reply-To: "<>" <<>>
Date: Thursday, June 25, 2015 at 2:30 PM
To: "<>" <<>>
Subject: Cost based optimization

Hello Everyone,

A quick question on the cost-based optimization module in Hive. Does the latest version support
query plan generation with alternate join orders ?


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