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From Gopal Vijayaraghavan <gop...@apache.org>
Subject Re: Optimized Hive query
Date Tue, 14 Jun 2016 07:12:28 GMT

> You can see that you get identical execution plans for the nested query
>and the flatten one.

Wasn't that always though. Back when I started with Hive, before Stinger,
it didn't have the identity project remover.

To know if your version has this fix, try looking at

hive> set hive.optimize.remove.identity.project;


Cheers,
Gopal

 



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