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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/01/21 01:51:00 UTC
[jira] [Commented] (SPARK-37037) Improve byte array sort by unify compareTo function of UTF8String and ByteArray
[ https://issues.apache.org/jira/browse/SPARK-37037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17479777#comment-17479777 ]
Apache Spark commented on SPARK-37037:
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User 'ulysses-you' has created a pull request for this issue:
https://github.com/apache/spark/pull/35264
> Improve byte array sort by unify compareTo function of UTF8String and ByteArray
> --------------------------------------------------------------------------------
>
> Key: SPARK-37037
> URL: https://issues.apache.org/jira/browse/SPARK-37037
> 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
>
>
> BinaryType use `TypeUtils.compareBinary` to compare two byte array, however it's slow since it compares byte array using unsigned int comparison byte by bye.
> We can compare them using `Platform.getLong` with unsigned long comparison if they have more than 8 bytes. And here is some histroy about this `TODO` [https://github.com/apache/spark/pull/6755/files#r32197461 .|https://github.com/apache/spark/pull/6755/files#r32197461]
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