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Posted to issues@orc.apache.org by "Gang Wu (Jira)" <ji...@apache.org> on 2023/03/16 09:32:00 UTC

[jira] [Closed] (ORC-434) Fix incorrect documentation for Date/Timestamp ColumnStatistics

     [ https://issues.apache.org/jira/browse/ORC-434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gang Wu closed ORC-434.
-----------------------
    Resolution: Fixed

> Fix incorrect documentation for Date/Timestamp ColumnStatistics
> ---------------------------------------------------------------
>
>                 Key: ORC-434
>                 URL: https://issues.apache.org/jira/browse/ORC-434
>             Project: ORC
>          Issue Type: Bug
>          Components: documentation
>            Reporter: Gang Wu
>            Assignee: Gang Wu
>            Priority: Major
>
> In the documentation of ORC specification, the following two statements are wrong:
>  * Date columns record the minimum and maximum values as the number of days since the epoch (1/1/2015).
>  * Timestamp columns record the minimum and maximum values as the number of milliseconds since the epoch (1/1/2015).
> The correct epoch is UNIX time epoch which is January 1, 1970 in UTC.



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