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https://issues.apache.org/jira/browse/HIVE-15655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated HIVE-15655:
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Status: Patch Available (was: Open)
> Optimizer: Allow config option to disable n-way JOIN merging
> -------------------------------------------------------------
>
> Key: HIVE-15655
> URL: https://issues.apache.org/jira/browse/HIVE-15655
> Project: Hive
> Issue Type: Bug
> Components: Physical Optimizer
> Affects Versions: 2.2.0
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-15655.1.patch
>
>
> N-way Joins in Tez produce bad runtime plans whenever they are left-outer
> joins with map-joins.
> This is something which should have a safety setting.
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