Tanel Kiis created SPARK-46070:
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Summary: Precompile regex patterns in SparkDateTimeUtils.getZoneId
Key: SPARK-46070
URL: https://issues.apache.org/jira/browse/SPARK-46070
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.5.0
Reporter: Tanel Kiis
SparkDateTimeUtils.getZoneId uses String.replaceFirst method, that internally
does a Pattern.compile(regex). This method is called once for each dataset row
when using functions like from_utc_timestamp.
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