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https://issues.apache.org/jira/browse/HIVE-8746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14360814#comment-14360814
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Sergey Shelukhin edited comment on HIVE-8746 at 3/13/15 5:59 PM:
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+0, I think the reader should actually throw an exception if the file was
written on a different machine. That will also elegantly solve all of our
locality problems :)
was (Author: sershe):
+0, I think the reader should actually throw an exception if the file was
written on a different machine. That will also elegantly solve all of our
locality problems
> ORC timestamp columns are sensitive to daylight savings time
> ------------------------------------------------------------
>
> Key: HIVE-8746
> URL: https://issues.apache.org/jira/browse/HIVE-8746
> Project: Hive
> Issue Type: Bug
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
>
> 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 11:34:56".
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