Rick Zamora created ARROW-8244:
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Summary: Add `write_to_dataset` option to populate the "file_path"
metadata fields
Key: ARROW-8244
URL: https://issues.apache.org/jira/browse/ARROW-8244
Project: Apache Arrow
Issue Type: Wish
Reporter: Rick Zamora
Prior to [dask#6023|[https://github.com/dask/dask/pull/6023]], Dask has been
using the `write_to_dataset` API to write partitioned parquet datasets. This
PR is switching to a (hopefully temporary) custom solution, because that API
makes it difficult to populate the the "file_path" column-chunk metadata
fields that are returned within the optional `metadata_collector` kwarg. Dask
needs to set these fields correctly in order to generate a proper global
`"_metadata"` file.
Possible solutions to this problem:
# Optionally populate the file-path fields within `write_to_dataset`
# Always populate the file-path fields within `write_to_dataset`
# Return the file paths for the data written within `write_to_dataset` (up to
the user to manually populate the file-path fields)
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