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Posted to issues@spark.apache.org by "Maxim Gekk (Jira)" <ji...@apache.org> on 2020/04/14 17:19:00 UTC

[jira] [Created] (SPARK-31445) Avoid floating-point division in millisToDays

Maxim Gekk created SPARK-31445:
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             Summary: Avoid floating-point division in millisToDays
                 Key: SPARK-31445
                 URL: https://issues.apache.org/jira/browse/SPARK-31445
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.4.5
            Reporter: Maxim Gekk


As the benchmark https://github.com/MaxGekk/spark/pull/27, and comparison to Spark 3.0+an optimisation of fromJavaDate in https://github.com/apache/spark/pull/28205 show that floating-point ops in millisToDays badly impact on the performance of conversion java.sql.Date to Catalyst's date values. The ticket aims to replace double ops by int/long ops.



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