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https://issues.apache.org/jira/browse/SPARK-27031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-27031:
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Assignee: Apache Spark
> Avoid double formatting in timestampToString
> --------------------------------------------
>
> Key: SPARK-27031
> URL: https://issues.apache.org/jira/browse/SPARK-27031
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Maxim Gekk
> Assignee: Apache Spark
> Priority: Minor
>
> The method DateTimeUtils.timestampToString performs converting of its input
> to string twice:
> - First time by converting microseconds to java.sql.Timestamp and toString:
> https://github.com/apache/spark/blob/8e5f9995cad409799f3646b3d03761a771ea1664/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala#L103
> - Second time by using provided formatter:
> https://github.com/apache/spark/blob/8e5f9995cad409799f3646b3d03761a771ea1664/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala#L104
> This could be avoided by using specialised TimestampFormatter.
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