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Posted to issues@spark.apache.org by "Zhenhua Wang (JIRA)" <ji...@apache.org> on 2016/10/28 02:10:58 UTC

[jira] [Updated] (SPARK-17079) broadcast decision based on cbo

     [ https://issues.apache.org/jira/browse/SPARK-17079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhenhua Wang updated SPARK-17079:
---------------------------------
    Description: We decide if broadcast join should be used based on the cardinality and size of join input side rather than the initial size of the join base relation.   (was: We decide if broadcast join should be used based on the cardinality and size of join input side rather than the initial size of the join base relation. We also decide build side of HashJoin based on cbo.)

> broadcast decision based on cbo
> -------------------------------
>
>                 Key: SPARK-17079
>                 URL: https://issues.apache.org/jira/browse/SPARK-17079
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Optimizer
>    Affects Versions: 2.0.0
>            Reporter: Ron Hu
>
> We decide if broadcast join should be used based on the cardinality and size of join input side rather than the initial size of the join base relation. 



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