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https://issues.apache.org/jira/browse/HIVE-4525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13656479#comment-13656479
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Eric Hanson commented on HIVE-4525:
-----------------------------------
Yes, so you'd have to support both at least for an extended period of time. It
would be a performance enhancement and you'd need to maintain backward
compatibility for older data.
> Support timestamps earlier than 1970 and later than 2038
> --------------------------------------------------------
>
> Key: HIVE-4525
> URL: https://issues.apache.org/jira/browse/HIVE-4525
> Project: Hive
> Issue Type: Bug
> Reporter: Mikhail Bautin
> Assignee: Mikhail Bautin
> Attachments: D10755.1.patch
>
>
> TimestampWritable currently serializes timestamps using the lower 31 bits of
> an int. This does not allow to store timestamps earlier than 1970 or later
> than a certain point in 2038.
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