You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@spark.apache.org by "Bruce Robbins (Jira)" <ji...@apache.org> on 2022/01/06 23:10:00 UTC

[jira] [Commented] (SPARK-37832) Orc struct serializer should look up field converters in an array rather than a linked list

    [ https://issues.apache.org/jira/browse/SPARK-37832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17470235#comment-17470235 ] 

Bruce Robbins commented on SPARK-37832:
---------------------------------------

I will post of PR shortly.

> Orc struct serializer should look up field converters in an array rather than a linked list
> -------------------------------------------------------------------------------------------
>
>                 Key: SPARK-37832
>                 URL: https://issues.apache.org/jira/browse/SPARK-37832
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.3.0
>            Reporter: Bruce Robbins
>            Priority: Major
>
> The OrcSerializer's struct converter uses an index to look up a field converter in a linked list, resulting in a n*(n/2) average complexity per row (where n is the field count).
> Simply converting the linked list to an array brings performance gains, especially for wide structs.



--
This message was sent by Atlassian Jira
(v8.20.1#820001)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org