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Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2019/09/19 06:28:00 UTC
[jira] [Commented] (SPARK-29169) Performance regression in ORC
Vectorized on TINYINT scans
[ https://issues.apache.org/jira/browse/SPARK-29169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16933096#comment-16933096 ]
Dongjoon Hyun commented on SPARK-29169:
---------------------------------------
Could you copy the snippet of both numbers here? It's hard to see the diff since the pointer only gives new number.
> Performance regression in ORC Vectorized on TINYINT scans
> ---------------------------------------------------------
>
> Key: SPARK-29169
> URL: https://issues.apache.org/jira/browse/SPARK-29169
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Maxim Gekk
> Priority: Major
>
> The updated benchmark results show performance regression *(almost 2 times slower)* in ORC Vectorized on scanning Single TINYINT Column, see https://github.com/apache/spark/pull/25828/files#diff-e37c3433287c7371ff9c2404db821095R13 . Need to find out the root cause of this and fix it.
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