hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ashutosh Chauhan (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-22629) AST Node Children can be quite expensive to build due to List resizing
Date Sun, 10 May 2020 03:34:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-22629?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-22629:
------------------------------------
    Fix Version/s: 4.0.0
       Resolution: Fixed
           Status: Resolved  (was: Patch Available)

> AST Node Children can be quite expensive to build due to List resizing
> ----------------------------------------------------------------------
>
>                 Key: HIVE-22629
>                 URL: https://issues.apache.org/jira/browse/HIVE-22629
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Slim Bouguerra
>            Assignee: Slim Bouguerra
>            Priority: Major
>             Fix For: 4.0.0
>
>         Attachments: HIVE-22629.1.patch, HIVE-22629.2.patch, HIVE-22629.3.patch, HIVE-22629.patch,
noETLs_ETLs_profile-kc-hdp-mstr06-p.servicemanagement.com-interactive-166620-t-e-cpu-1576029590.svg
>
>
> As per the attached profile, The AST Node can be a major source of CPU and memory churn,
due to the ArrayList resizing and copy.
> In my Opinion this can be amortized by providing the actual size.
> [~jcamachorodriguez] / [~vgarg] 



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

Mime
View raw message