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Posted to issues@hive.apache.org by "Deepak Jaiswal (JIRA)" <ji...@apache.org> on 2017/03/20 21:56:42 UTC

[jira] [Updated] (HIVE-16260) Remove parallel edges of semijoin with map joins.

     [ https://issues.apache.org/jira/browse/HIVE-16260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Deepak Jaiswal updated HIVE-16260:
----------------------------------
    Attachment: HIVE-16260.1.patch

> Remove parallel edges of semijoin with map joins.
> -------------------------------------------------
>
>                 Key: HIVE-16260
>                 URL: https://issues.apache.org/jira/browse/HIVE-16260
>             Project: Hive
>          Issue Type: Task
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>         Attachments: HIVE-16260.1.patch
>
>
> Remove parallel edges of semijoin with map joins as they don't give any benefit to the query.
> Also, ensure that bloom filters are created to handle at least 1M entries and the semijoin is disabled if the big table has less than 1M rows.
> Both these features are configurable.



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