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https://issues.apache.org/jira/browse/SPARK-34164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17268326#comment-17268326
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Apache Spark commented on SPARK-34164:
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User 'yaooqinn' has created a pull request for this issue:
https://github.com/apache/spark/pull/31253
> Improve write side varchar check to visit only last few tailing spaces
> ----------------------------------------------------------------------
>
> Key: SPARK-34164
> URL: https://issues.apache.org/jira/browse/SPARK-34164
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0, 3.2.0
> Reporter: Kent Yao
> Priority: Major
>
> For varchar(N), we currently trim all spaces first to check whether the
> remained length exceeds, it not necessary to visit them all but at most to
> those after N.
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