[jira] [Comment Edited] (ARROW-13269) [C++] [Dataset] pyarrow.parquet.write_to_dataset does not send full schema to metadata_collector

["Ben Kietzman (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-13269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17376610#comment-17376610 ] 

Ben Kietzman edited comment on ARROW-13269 at 7/7/21, 2:41 PM:
---------------------------------------------------------------

arrow::dataset::FileWriter should probably have a partition_expression property (containing the partition information with which the file was written), which would probably help here (though not in the case of use_legacy=True)


was (Author: bkietz):
arrow::dataset::FileWriter should probably have a partition_expression property (containing the partition information with which the file was written), which would probably help here

> [C++] [Dataset] pyarrow.parquet.write_to_dataset does not send full schema to metadata_collector
> ------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-13269
>                 URL: https://issues.apache.org/jira/browse/ARROW-13269
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>    Affects Versions: 4.0.0
>            Reporter: Weston Pace
>            Priority: Major
>
> If there are partition columns specified then the writers will only write the non-partition columns and thus they will not contain the fields used for the partition.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)