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Posted to issues@arrow.apache.org by "Romain François (JIRA)" <ji...@apache.org> on 2019/06/10 08:43:00 UTC
[jira] [Resolved] (ARROW-3702) [R] POSIXct mapped to DateType not
TimestampType?
[ https://issues.apache.org/jira/browse/ARROW-3702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Romain François resolved ARROW-3702.
------------------------------------
Resolution: Fixed
> [R] POSIXct mapped to DateType not TimestampType?
> -------------------------------------------------
>
> Key: ARROW-3702
> URL: https://issues.apache.org/jira/browse/ARROW-3702
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Javier Luraschi
> Priority: Major
> Fix For: 0.14.0
>
>
> Why was POSIXct mapped to [DataType|https://arrow.apache.org/docs/cpp/classarrow_1_1_date_type.html#a6aea1fcfd9f998e8fa50f5ae62dbd7e6] not [TimestampType|https://arrow.apache.org/docs/cpp/classarrow_1_1_timestamp_type.html#a88e0ba47b82571b3fc3798b6c099499b]? What are the PRO/CONs from each approach?
> This is mostly to interoperate with Spark which choose to map POSIXct to Timestamps since in Spark, not Arrow, dates do not have a time component. There is a way to make this work in Spark with POSIXct mapped to DateType by mapping DateType to timestamps, so mostly looking to understand tradeoffs.
> One particular question, timestamps in arrow seem to support timezones, wouldn't it make more sense to map POSIXct to timestamps?
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