Carson Wang created SPARK-13185:
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Summary: Improve the performance of DateTimeUtils by reusing
TimeZone and Calendar objects
Key: SPARK-13185
URL: https://issues.apache.org/jira/browse/SPARK-13185
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 1.6.0
Reporter: Carson Wang
Priority: Minor
It is expensive to create java TimeZone and Calendar objects in each method of
DateTimeUtils. We can reuse the objects to improve the performance. In one of
my Sql queries, the duration of the stage improved from 1.6 minutes to 1.2
minutes.
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