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From "Namit Jain (JIRA)" <>
Subject [jira] Commented: (HIVE-964) handle skewed keys for a join in a separate job
Date Sat, 16 Jan 2010 00:04:54 GMT


Namit Jain commented on HIVE-964:

Can you file follow up patches - I will try to merge this

> handle skewed keys for a join in a separate job
> -----------------------------------------------
>                 Key: HIVE-964
>                 URL:
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: He Yongqiang
>         Attachments: hive-964-2009-12-17.txt, hive-964-2009-12-28-2.patch, hive-964-2009-12-29-4.patch,
hive-964-2010-01-08.patch, hive-964-2010-01-13-2.patch, hive-964-2010-01-14-3.patch, hive-964-2010-01-15-4.patch
> The skewed keys can be written to a temporary table or file, and a followup conditional
task can be used to perform the join on those keys.
> As a first step, JDBM can be used for those keys

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