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https://issues.apache.org/jira/browse/SPARK-36992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean R. Owen updated SPARK-36992:
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Priority: Minor (was: Major)
> Improve byte array sort perf by unify getPrefix function of UTF8String and
> ByteArray
> ------------------------------------------------------------------------------------
>
> Key: SPARK-36992
> URL: https://issues.apache.org/jira/browse/SPARK-36992
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: XiDuo You
> Assignee: XiDuo You
> Priority: Minor
> Fix For: 3.3.0
>
>
> When execute sort operator, we first compare the prefix. However the
> getPrefix function of byte array is slow. We use first 8 bytes as the prefix,
> so at most we will call 8 times with `Platform.getByte` which is slower than
> call once with `Platform.getInt` or `Platform.getLong`.
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