We use arrow to do the validation 'for free': it has a typed columnar schema, so by passing the schema, we get the recordset validation without inspecting value

We use arrow to do the validation 'for free': it has a typed columnar schema, so by passing the schema, we get the recordset validation without inspecting values. we still need to do semantic validation, but w/ arrow, now we do that in bulk and on gpus :)