[jira] [Updated] (ARROW-6823) [C++][Python][R] Support metadata in the feather format?

["Joris Van den Bossche (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-6823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joris Van den Bossche updated ARROW-6823:
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    Component/s: R
                 Python
                 C++

> [C++][Python][R] Support metadata in the feather format?
> --------------------------------------------------------
>
>                 Key: ARROW-6823
>                 URL: https://issues.apache.org/jira/browse/ARROW-6823
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++, Python, R
>            Reporter: Joris Van den Bossche
>            Priority: Major
>              Labels: feather
>
> This might need to wait / could be enabled by the feather v2 (ARROW-5510), but thought to open a specific issue about it: do we want to support saving metadata in feather files?
> With Parquet files, you can have file-level metadata (which we currently use to eg store the pandas_metadata). I think it would be useful to have a similar mechanism for Feather files.
> A use case where this came up is in GeoPandas where we would like to store the Coordinate Reference System identifier of the geometry data inside the file, to avoid needing a sidecar file just for that.
> In a v2 world (using the IPC format), I suppose this could be the metadata of the Schema.



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