fn validate_remote_schema(
expected: &Schema,
actual: &Schema,
source: &str,
) -> Result<()>Expand description
Validates the remote schema before positional column handling.
Field metadata (indexing/encoding/compression hints) is non-semantic at
this boundary and is ignored: two fields are equal when their name, data
type, and nullability match (see fields_semantically_equal). A
timestamp timezone difference is the only intentional exception, accepted
when the fields share the same timestamp unit, distinct timezones, and
equal name and nullability. Top-level Arrow schema metadata is
non-semantic at this boundary as well. JSON columns are compared
semantically (see json_fields_compatible) because their wire and
decoded representations use different physical arrow types.