hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Prasanth Jayachandran (JIRA)" <>
Subject [jira] [Updated] (HIVE-8746) ORC timestamp columns are sensitive to daylight savings time
Date Fri, 20 Mar 2015 22:04:38 GMT


Prasanth Jayachandran updated HIVE-8746:
    Attachment: HIVE-8746.2.patch

Addressed [~owen.omalley]'s review comments and updated golden files to reflect the file size

> ORC timestamp columns are sensitive to daylight savings time
> ------------------------------------------------------------
>                 Key: HIVE-8746
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-8746.1.patch, HIVE-8746.2.patch
> Hive uses Java's Timestamp class to manipulate timestamp columns. Unfortunately the textual
parsing in Timestamp is done in local time and the internal storage is in UTC.
> ORC mostly side steps this issue by storing the difference between the time and a base
time also in local and storing that difference in the file. Reading the file between timezones
will mostly work correctly "2014-01-01 12:34:56" will read correctly in every timezone.
> However, when moving between timezones with different daylight saving it creates trouble.
In particular, moving from a computer in PST to UTC will read "2014-06-06 12:34:56" as "2014-06-06

This message was sent by Atlassian JIRA

View raw message