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https://issues.apache.org/jira/browse/HIVE-5271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gunther Hagleitner updated HIVE-5271:
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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 position
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: https://issues.apache.org/jira/browse/HIVE-5271
> 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, HIVE-5271.WIP.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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