[jira] [Commented] (ARROW-9219) [R] coerce_timestamps in Parquet write options does not work

["Slim Bentami (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-9219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17144364#comment-17144364 ] 

Slim Bentami commented on ARROW-9219:
-------------------------------------

i would love to do what i can to help but i'm afraid i am too much of a newbie.

> [R] coerce_timestamps in Parquet write options does not work
> ------------------------------------------------------------
>
>                 Key: ARROW-9219
>                 URL: https://issues.apache.org/jira/browse/ARROW-9219
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: R
>    Affects Versions: 0.17.1
>         Environment: macOS 10.15.5, R  4.0.0
>            Reporter: Slim Bentami
>            Priority: Major
>             Fix For: 1.0.0
>
>
> i am trying to truncate timestamps to milliseconds when writing a parquet file.
> with:
>  
> {{tutu <- as.POSIXct("2020/06/03 18:00:00",tz = "UTC")}}
> if i do:
>  
> {{write_parquet(data.frame(tutu),"~/Downloads/tutu.test.parquet")}}
> i get 1591207200000000
> if i do:
>  
> {{write_parquet(data.frame(tutu),"~/Downloads/tutu.test.parquet", coerce_timestamps = "ms", allow_truncated_timestamps = TRUE)}}
> i get the error message:
>  
> {{Error in parquet___ArrowWriterProperties___Builder__coerce_timestamps(unit) : 
>   argument "unit" is missing, with no default}}
> what am i doing wrong? thanks in advance.



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