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https://issues.apache.org/jira/browse/SPARK-48852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-48852.
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Fix Version/s: 4.0.0
Resolution: Fixed
Issue resolved by pull request 47277
[https://github.com/apache/spark/pull/47277]
> String trim function returning incorrect results in Spark connect
> -----------------------------------------------------------------
>
> Key: SPARK-48852
> URL: https://issues.apache.org/jira/browse/SPARK-48852
> Project: Spark
> Issue Type: Bug
> Components: Connect
> Affects Versions: 3.5.0
> Reporter: Biruk Tesfaye
> Assignee: ASF GitHub Bot
> Priority: Major
> Labels: correctness, pull-request-available
> Fix For: 4.0.0
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> With spark connect, the snippet:
>
> {code:java}
> import org.apache.spark.sql.functions.trim
> import spark.implicits._
> val df = Seq((" john"), ("jane "), (" ann ")).toDF("name")
> val trimmedDF = df.withColumn("name", trim($"name", " "))
> trimmedDF.collect(){code}
> returns an incorrect result
> {code:java}
> Array[Row] = Array([], [], []){code}
> We get the same result when using `{{{}rtrim{}}}` and `{{{}ltrim{}}}` as
> well.
>
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