[jira] [Updated] (HIVE-11297) Combine op trees for partition info generating tasks

["Ferdinand Xu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-11297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ferdinand Xu updated HIVE-11297:
--------------------------------
    Summary: Combine op trees for partition info generating tasks  (was: Combine op trees for partition info generating tasks [Spark branch])

> Combine op trees for partition info generating tasks
> ----------------------------------------------------
>
>                 Key: HIVE-11297
>                 URL: https://issues.apache.org/jira/browse/HIVE-11297
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: spark-branch
>            Reporter: Chao Sun
>            Assignee: liyunzhang_intel
>         Attachments: HIVE-11297.1.patch, HIVE-11297.2.patch, HIVE-11297.3.patch, HIVE-11297.4.patch, HIVE-11297.5.patch, HIVE-11297.6.patch, HIVE-11297.7.patch, HIVE-11297.8.patch, hive-site.xml
>
>
> Currently, for dynamic partition pruning in Spark, if a small table generates partition info for more than one partition columns, multiple operator trees are created, which all start from the same table scan op, but have different spark partition pruning sinks.
> As an optimization, we can combine these op trees and so don't have to do table scan multiple times.



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