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Posted to issues@spark.apache.org by "Carson Wang (JIRA)" <ji...@apache.org> on 2017/07/20 01:45:00 UTC

[jira] [Commented] (SPARK-9860) Join: Determine the join strategy (broadcast join or shuffle join) at runtime

    [ https://issues.apache.org/jira/browse/SPARK-9860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16094076#comment-16094076 ] 

Carson Wang commented on SPARK-9860:
------------------------------------

We are working on this and also improving the current implementation of changing reducer number at runtime.
Here is a design doc we proposed. 
https://docs.google.com/document/d/1WCJ2BmA8_dJL_jmYie_x9ZCrz7r3ZjleJSoX0dlDXaw/edit?usp=sharing


> Join: Determine the join strategy (broadcast join or shuffle join) at runtime
> -----------------------------------------------------------------------------
>
>                 Key: SPARK-9860
>                 URL: https://issues.apache.org/jira/browse/SPARK-9860
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Yin Huai
>




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