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Posted to issues@hive.apache.org by "mahesh kumar behera (Jira)" <ji...@apache.org> on 2020/07/24 02:39:00 UTC

[jira] [Updated] (HIVE-23919) Merge all kind of Join operator variants (Semi, Anti, Normal) into one.

     [ https://issues.apache.org/jira/browse/HIVE-23919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

mahesh kumar behera updated HIVE-23919:
---------------------------------------
    Description: 
Currently in Hive we create different operator for different kind of join. n Calcite, it all seems to be based on a single Join class in newer releases. So the classes like HiveAntiJoin, HiveSemiJoin can be merged into one.

 

  was:
For Anti Join, we emit the records if the join condition does not satisfies. In case of PK-FK rule we have to explore if this can be exploited to speed up Anti Join processing.

 


> Merge all kind of Join operator variants (Semi, Anti, Normal) into one. 
> ------------------------------------------------------------------------
>
>                 Key: HIVE-23919
>                 URL: https://issues.apache.org/jira/browse/HIVE-23919
>             Project: Hive
>          Issue Type: Bug
>            Reporter: mahesh kumar behera
>            Assignee: mahesh kumar behera
>            Priority: Major
>
> Currently in Hive we create different operator for different kind of join. n Calcite, it all seems to be based on a single Join class in newer releases. So the classes like HiveAntiJoin, HiveSemiJoin can be merged into one.
>  



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