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Posted to dev@hive.apache.org by "Chengxiang Li (JIRA)" <ji...@apache.org> on 2014/08/05 09:27:12 UTC

[jira] [Updated] (HIVE-7613) Research optimization of auto convert join to map join[Spark branch]

     [ https://issues.apache.org/jira/browse/HIVE-7613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chengxiang Li updated HIVE-7613:
--------------------------------

    Issue Type: Task  (was: Bug)
       Summary: Research optimization of auto convert join to map join[Spark branch]  (was: Research and verify optimization of auto convert join to map join[Spark branch])

> Research optimization of auto convert join to map join[Spark branch]
> --------------------------------------------------------------------
>
>                 Key: HIVE-7613
>                 URL: https://issues.apache.org/jira/browse/HIVE-7613
>             Project: Hive
>          Issue Type: Task
>          Components: Spark
>            Reporter: Chengxiang Li
>
> ConvertJoinMapJoin is an optimization the replaces a common join(aka shuffle join) with a map join(aka broadcast or fragment replicate join) when possible. we need to research how to make it workable with Hive on Spark.



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