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https://issues.apache.org/jira/browse/ARROW-315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15546339#comment-15546339
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Julian Hyde commented on ARROW-315:
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[~grahn] +1
> Finalize timestamp type
> -----------------------
>
> Key: ARROW-315
> URL: https://issues.apache.org/jira/browse/ARROW-315
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Format
> Reporter: Julien Le Dem
> Assignee: Julien Le Dem
>
> support int64 UNIX timestamps with a particular resolution.
> Parquet supports timestamp millis and micros (no nanos)
> https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#datetime-types
> currently Arrow timestamps have a timezone field.
> https://github.com/apache/arrow/blob/master/format/Message.fbs#L67
> proposal to change timestamp as follows:
> - remove "timestamp" field and say it's UTC
> - add unit field (MICROS | MILLIS)
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