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https://issues.apache.org/jira/browse/HIVE-22099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adam Szita updated HIVE-22099:
------------------------------
Summary: Several date related UDFs can't handle Julian dates properly since
HIVE-20007 (was: GenericUDFDateFormat can't handle Julian dates properly)
> Several date related UDFs can't handle Julian dates properly since HIVE-20007
> -----------------------------------------------------------------------------
>
> Key: HIVE-22099
> URL: https://issues.apache.org/jira/browse/HIVE-22099
> Project: Hive
> Issue Type: Bug
> Reporter: Adam Szita
> Assignee: Adam Szita
> Priority: Major
> Labels: backward-incompatible
> Attachments: HIVE-22099.0.patch, HIVE-22099.1.patch
>
>
> Currently dates that belong to Julian calendar (before Oct 15, 1582) are
> handled improperly by DateFormat UDF:
> Although the dates are in Julian calendar, the formatter insists to print
> these according to Gregorian calendar causing multiple days of difference in
> some cases:
>
> {code:java}
> beeline> select date_format('1001-01-05','dd---MM--yyyy');
> +----------------+
> | _c0 |
> +----------------+
> | 30---12--1000 |
> +----------------+{code}
>
>
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