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https://issues.apache.org/jira/browse/SPARK-48712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kent Yao resolved SPARK-48712.
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Fix Version/s: 4.0.0
Assignee: Kent Yao
Resolution: Fixed
Resolved by https://github.com/apache/spark/pull/47096
> Perf Improvement for Encode with empty string and UTF-8 charset
> ---------------------------------------------------------------
>
> Key: SPARK-48712
> URL: https://issues.apache.org/jira/browse/SPARK-48712
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.0.0
> Reporter: Kent Yao
> Assignee: Kent Yao
> Priority: Major
> Fix For: 4.0.0
>
>
> Apple M2 Max
> encode: Best Time(ms) Avg Time(ms)
> Stdev(ms) Rate(M/s) Per Row(ns) Relative
>
> ------------------------------------------------------------------------------------------------------------------------
> -UTF-8 3672 3697
> 22 5.4 183.6 1.0X
> +UTF-8 79270 79698
> 448 0.3 3963.5 1.0X
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