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https://issues.apache.org/jira/browse/SPARK-23902?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takuya Ueshin resolved SPARK-23902.
-----------------------------------
Resolution: Fixed
Fix Version/s: 2.4.0
Issue resolved by pull request 21008
[https://github.com/apache/spark/pull/21008]
> Provide an option in months_between UDF to disable rounding-off
> ---------------------------------------------------------------
>
> Key: SPARK-23902
> URL: https://issues.apache.org/jira/browse/SPARK-23902
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Xiao Li
> Assignee: Marco Gaido
> Priority: Major
> Fix For: 2.4.0
>
>
> https://issues.apache.org/jira/browse/HIVE-15511
> {noformat}
> Rounding off was added in {{GenericUDFMonthsBetween}} so that it can be
> compatible with systems like oracle. However, there are places where rounding
> off is not needed.
> E.g "CAST(MONTHS_BETWEEN(l_shipdate, l_commitdate) / 12 AS INT)" may not need
> rounding off via BigDecimal which is compute intensive.
> {noformat}
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