Hi Kou,
Le 04/03/2026 à 06:14, Sutou Kouhei a écrit :
I think that key/item/value field names of map type in
Apache Arrow data should not be ignored. Is it correct?
I don't know. The behavior in Arrow C++ was deliberate, see previous
work here:
https://github.com/apache/arrow/pull/35298#issuecomment-1520357836
In particular Will Jones said this:
"""Preserve field names of Map subfields. I'm -0.7 on this. The spec
dictates they should be certain names, and I don't see good reason to
let them deviate from this much. Right now we don't preserve them in the
C Data Interface."""
Regards
Antoine.
