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https://issues.apache.org/jira/browse/HIVE-4525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652709#comment-13652709
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Mikhail Bautin commented on HIVE-4525:
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Also, the binary-sortable representation of timestamps would have to change to
accommodate additional high-order bits. If a 4-byte second-precision timestamp
covers 68 years (or 136 if signed), by adding one most-significant byte we can
cover 17408 (or 34816) years, which is good enough for all practical purposes.
> 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
>
> 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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