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Posted to issues@spark.apache.org by "Maxim Gekk (Jira)" <ji...@apache.org> on 2020/02/17 17:19:01 UTC

[jira] [Updated] (SPARK-30793) Wrong truncations of timestamps before the epoch to minutes and seconds

     [ https://issues.apache.org/jira/browse/SPARK-30793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Maxim Gekk updated SPARK-30793:
-------------------------------
    Affects Version/s: 2.4.5

> Wrong truncations of timestamps before the epoch to minutes and seconds
> -----------------------------------------------------------------------
>
>                 Key: SPARK-30793
>                 URL: https://issues.apache.org/jira/browse/SPARK-30793
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.4.5, 3.0.0
>            Reporter: Maxim Gekk
>            Assignee: Maxim Gekk
>            Priority: Major
>             Fix For: 3.0.0
>
>
> Truncations to seconds and minutes of timestamps after the epoch are correct:
> {code:sql}
> spark-sql> select date_trunc('SECOND', '2020-02-11 00:01:02.123'), date_trunc('SECOND', '2020-02-11 00:01:02.789');
> 2020-02-11 00:01:02	2020-02-11 00:01:02
> {code}
> but truncations of timestamps before the epoch are incorrect:
> {code:sql}
> spark-sql> select date_trunc('SECOND', '1960-02-11 00:01:02.123'), date_trunc('SECOND', '1960-02-11 00:01:02.789');
> 1960-02-11 00:01:03	1960-02-11 00:01:03
> {code}
> The result must be *1960-02-11 00:01:02	1960-02-11 00:01:02*
> The same for the MINUTE level:
> {code:sql}
> spark-sql> select date_trunc('MINUTE', '1960-02-11 00:01:01'), date_trunc('MINUTE', '1960-02-11 00:01:50');
> 1960-02-11 00:02:00	1960-02-11 00:02:00
> {code}
> The result must be 1960-02-11 00:01:00	1960-02-11 00:01:00



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