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From "Rui Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-8406) Research on skewed join [Spark Branch]
Date Fri, 24 Oct 2014 13:24:33 GMT

     [ https://issues.apache.org/jira/browse/HIVE-8406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rui Li updated HIVE-8406:
-------------------------
    Attachment: Skew join background.pdf

Upload the doc so it may help people get a better understand how skew join is done. Comments
and suggestions are welcome.
The doc may change as I dig deeper into the details and begin implementation.

> Research on skewed join [Spark Branch]
> --------------------------------------
>
>                 Key: HIVE-8406
>                 URL: https://issues.apache.org/jira/browse/HIVE-8406
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>            Reporter: Xuefu Zhang
>            Assignee: Rui Li
>         Attachments: Skew join background.pdf
>
>
> Research on how to handle skewed join for hive on spark. Here is original hive's design
doc for skewed join, https://cwiki.apache.org/confluence/display/Hive/Skewed+Join+Optimization.



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