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https://issues.apache.org/jira/browse/ARROW-316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928525#comment-15928525
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Wes McKinney commented on ARROW-316:
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[~julienledem] I guess we should revise the description to be "UNIX time",
which does not include leap seconds (https://en.wikipedia.org/wiki/Unix_time).
One option is to add an enum like:
{code}
enum DateUnit: short {
DAY, /// 32-bit storage
MILLISECOND, /// 64-bit storage
}
{code}
and add that to the Date flatbuffer table.
> Finalize Date type
> ------------------
>
> Key: ARROW-316
> URL: https://issues.apache.org/jira/browse/ARROW-316
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Format
> Reporter: Julien Le Dem
> Assignee: Julien Le Dem
> Fix For: 0.3.0
>
>
> Parquet defines it as: "number of days from the Unix epoch, 1 January 1970."
> https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#datetime-types
> We should make it the same.
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