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From "Gang Wu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ORC-434) Fix incorrect documentation for Date/Timestamp ColumnStatistics
Date Thu, 08 Nov 2018 22:37:00 GMT
Gang Wu created ORC-434:
---------------------------

             Summary: 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


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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