Indeed, I did, with both serde json and dynamodb. Inside an arrow schema,
the metadata field is a hashmap with skip serializing if empty. When
deserializing, it expects a metadata field. I would expect that every
schema can be serialized-deserialized back in itself.
Jack
On Sat, Apr 3, 2021, 10:59 AM Andrew Lamb <al...@influxdata.com> wrote:
> This looks like a rust program. Perhaps you could try using `serde_json` or
> some other format to narrow down where the issue is
>
> On Fri, Apr 2, 2021 at 10:00 PM Jack Chan <j4ck....@gmail.com> wrote:
>
> > Hi
> >
> > I tried to serialize and deserialize an arrow schema, but I got into an
> > error of
> > (Error { message: "missing field `metadata`" }). Is this a bug in apache
> > arrow or in serde_dynamodb?
> >
> > ```
> > let schema = ArrowSchema::empty();
> > let object = serde_dynamodb::to_hashmap(&schema)?;
> > let roundtrip: ArrowSchema =
> serde_dynamodb::from_hashmap(object)?;
> > assert_eq!(roundtrip, schema);
> > ```
> >
> > Jack
> >
>
