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https://issues.apache.org/jira/browse/ARROW-14010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17415794#comment-17415794
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Weston Pace commented on ARROW-14010:
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[~jorisvandenbossche] [~ldacey] Am I missing anything? I really had thought
this was possible but now I can't figure it out.
> [C++][Python] No way to generate UUID filenames with new datasets API
> ---------------------------------------------------------------------
>
> Key: ARROW-14010
> URL: https://issues.apache.org/jira/browse/ARROW-14010
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Weston Pace
> Assignee: Weston Pace
> Priority: Major
>
> I had assumed this could be done using the "partition_filename_cb" in
> "pyarrow.parquet.write_to_dataset" but that doesn't work if
> "use_legacy_dataset" is False. The "basename_template" only allows string
> substitution so it cannot inject UUID. Given that this is the only support
> for any kind of "append" mode when writing to datasets I think this feature
> is important and can block migration from the old writer.
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