hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ferdinand Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-17139) Conditional expressions optimization: skip the expression evaluation if the condition is not satisfied for vectorization engine.
Date Thu, 12 Oct 2017 01:46:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ferdinand Xu updated HIVE-17139:
--------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.0
           Status: Resolved  (was: Patch Available)

Push to the master. Thanks [~Jk_Self] for the patch.

> Conditional expressions optimization: skip the expression evaluation if the condition
is not satisfied for vectorization engine.
> --------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-17139
>                 URL: https://issues.apache.org/jira/browse/HIVE-17139
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Ke Jia
>            Assignee: Ke Jia
>             Fix For: 3.0.0
>
>         Attachments: HIVE-17139.1.patch, HIVE-17139.10.patch, HIVE-17139.11.patch, HIVE-17139.12.patch,
HIVE-17139.13.patch, HIVE-17139.13.patch, HIVE-17139.14.patch, HIVE-17139.15.patch, HIVE-17139.16.patch,
HIVE-17139.17.patch, HIVE-17139.18.patch, HIVE-17139.18.patch, HIVE-17139.19.patch, HIVE-17139.2.patch,
HIVE-17139.20.patch, HIVE-17139.3.patch, HIVE-17139.4.patch, HIVE-17139.5.patch, HIVE-17139.6.patch,
HIVE-17139.7.patch, HIVE-17139.8.patch, HIVE-17139.9.patch
>
>
> The case when and if statement execution for Hive vectorization is not optimal, which
all the conditional and else expressions are evaluated for current implementation. The optimized
approach is to update the selected array of batch parameter after the conditional expression
is executed. Then the else expression will only do the selected rows instead of all.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Mime
View raw message