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https://issues.apache.org/jira/browse/HIVE-18358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Sherman reassigned HIVE-18358:
-------------------------------------

    Assignee: Andrew Sherman

> from_unixtime returns wrong year for Dec 31 timestamps with format 'YYYY'
> -------------------------------------------------------------------------
>
>                 Key: HIVE-18358
>                 URL: https://issues.apache.org/jira/browse/HIVE-18358
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 2.1.0
>         Environment: AWS EMR with Hive 2.1.0-amzn-0
>            Reporter: Nick Orka
>            Assignee: Andrew Sherman
>              Labels: timezone
>
> If you use capital Ys as a year format in from_unixtime() it returns next 
> year for Dec 31 only. All other days work as intended.
> Here is reproduction code:
> {code:sql}
> hive> select from_unixtime(1514754599, 'YYYY-MM-dd HH-mm-ss'), 
> from_unixtime(1514754599, 'yyyy-MM-dd HH-mm-ss');
> OK
> 2018-12-31 21-09-59   2017-12-31 21-09-59
> Time taken: 0.025 seconds, Fetched: 1 row(s)
> hive>
> {code}



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