alamb commented on PR #19064:
URL: https://github.com/apache/datafusion/pull/19064#issuecomment-3648048531

   > The problem I see with this is that (1) there's obvious benefit to 
supporting more things in the future and (2) @zhuqi-lucas already has a PR open 
to do so. So if we stick to a narrower API we're bound to break it in ~ days. 
It's also nice to have the consistency of API both across the sort pushdown 
stack but also with projection and filter pushdown.
   
   To be clear, I am only talking about `DataSource` (I do think pushdown_sort 
makes sense for ExecutionPlan and FileScanConfig)
   
   @zhuqi-lucas 's other PR shouldn't be using sort expressions in the parquet 
source, I don't think -- it should just reverse them all


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