marvinlanhenke opened a new issue, #271:
URL: https://github.com/apache/iceberg-rust/issues/271
...while working on the HMS catalog, I noticed missing fields (properties &
snapshots) in the metadata.json when serialized.
Currently we check if e.g. properties `is_empty()` and return `None` - due
to the serde option flag `None` will be skipped.
This causes downstream errors, since we need at least an empty object - for
example `"properties":{}`
https://github.com/apache/iceberg-rust/blob/main/crates/iceberg/src/spec/table_metadata.rs#L730-L737
Another issue I had are the default values for `partition_specs` and
`sort_orders`.
The new `TableMetadataBuilder` does not handle them for now, however we need
different default values - for example:
`"partition_specs: [{spec-id: 0, fields []}]"` otherwise I get downstream
errors as well.
https://github.com/apache/iceberg-rust/blob/main/crates/iceberg/src/spec/table_metadata.rs#L328-L335
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