[jira] [Resolved] (ARROW-315) Finalize timestamp type

["Julien Le Dem (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julien Le Dem resolved ARROW-315.
---------------------------------
    Resolution: Fixed

Issue resolved by pull request 156
[https://github.com/apache/arrow/pull/156]

> 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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