Hi Steve, Key-value metadata is exposed in both Python and R. See https://arrow.apache.org/docs/python/generated/pyarrow.Schema.html?highlight=metadata#pyarrow.Schema.metadata and https://arrow.apache.org/docs/r/articles/arrow.html#r-object-attributes, respectively.
Neal On Mon, Aug 31, 2020 at 3:46 AM Sun Yijiang <sunyiji...@gmail.com> wrote: > Is there a way to read/write user-defined metadata in IPC format? As far > as I know, metadata seems to exist for data schema only. It would be very > helpful to expose key-value metadata interface in C++/Python and R APIs. > > Best, > Steve >
