hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jianguo Tian (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11297) Combine op trees for partition info generating tasks [Spark branch]
Date Fri, 26 May 2017 02:17:04 GMT

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

Jianguo Tian updated HIVE-11297:
--------------------------------
    Attachment: HIVE-11297.1.patch

> Combine op trees for partition info generating tasks [Spark branch]
> -------------------------------------------------------------------
>
>                 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: Jianguo Tian
>         Attachments: HIVE-11297.1.patch
>
>
> 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.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message