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From "Gunther Hagleitner (JIRA)" <>
Subject [jira] [Updated] (HIVE-5271) Convert join op to a map join op in the planning phase
Date Mon, 30 Sep 2013 06:39:25 GMT


Gunther Hagleitner updated HIVE-5271:

    Attachment: HIVE-5271.5.patch

[~vikram.dixit] can you take a look at .5?

I've added some comments, but also I think there were two code issues:

a) pos wasn't incremented in the else branch, which I think leads to an incorrect big table

b) big table position -1 was used when all tables are empty.

> Convert join op to a map join op in the planning phase
> ------------------------------------------------------
>                 Key: HIVE-5271
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Tez
>    Affects Versions: tez-branch
>            Reporter: Vikram Dixit K
>            Assignee: Vikram Dixit K
>             Fix For: tez-branch
>         Attachments: HIVE-5271.2.patch, HIVE-5271.3.patch, HIVE-5271.4.patch, HIVE-5271.5.patch,
> This captures the planning changes required in hive to support hash joins. We need to
convert the join operator to a map join operator. This is hooked into the infrastructure provided
by HIVE-5095.

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