jdockerty opened a new issue, #1897:
URL: https://github.com/apache/iceberg-rust/issues/1897
When a `DataFile` is built through the derived builder (`DataFileBuilder`)
and no `split_offsets` are given, this is still serialised as `[]` instead of
`null`.
E.g. converting the Avro file to JSON it looks something like this:
```json
...
"split_offsets": {
"array": []
},
```
I suspect this is because the value within the `DataFile` is a `Vec<i64>`
instead of an `Option<Vec<i64>>`. I _think_ this `Option` is the correct
approach because the spec also states that `split_offsets` are optional and it
looks like they're [optional in the Java
implementation](https://github.com/apache/iceberg/blob/16e84356dae1975fa04d8c3ecce30a90df18ca9f/api/src/main/java/org/apache/iceberg/DataFile.java#L89-L91)
too.
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