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Posted to github@arrow.apache.org by "rshkv (via GitHub)" <gi...@apache.org> on 2025/02/09 01:29:29 UTC
[I] Support creating map arrays with key metadata [arrow-rs]
rshkv opened a new issue, #7100:
URL: https://github.com/apache/arrow-rs/issues/7100
In `iceberg-rust` needs to be able to construct a `MapArray` with metadata on both key and value fields. The [Iceberg spec][1] requires that all fields in a table, including map keys, have a unique field identifier. And `iceberg-rust` tracks the field identifier as a metadata field.
`MapBuilder` currently only supported overriding value fields [(here)][2]. We're hitting this limitation here: https://github.com/apache/iceberg-rust/pull/863#issuecomment-2646010721.
This is a request to support overriding the key field as well.
[1]: https://iceberg.apache.org/spec/#nested-types
[2]: https://github.com/apache/arrow-rs/blob/3bf29a2c7474e59722d885cd11fafd0dca13a28e/arrow-array/src/builder/map_builder.rs#L120
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Re: [I] Support creating map arrays with key metadata [arrow-rs]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on issue #7100:
URL: https://github.com/apache/arrow-rs/issues/7100#issuecomment-2653991906
`label_issue.py` automatically added labels {'arrow'} from #7101
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Re: [I] Support creating map arrays with key metadata [arrow-rs]
Posted by "tustvold (via GitHub)" <gi...@apache.org>.
tustvold closed issue #7100: Support creating map arrays with key metadata
URL: https://github.com/apache/arrow-rs/issues/7100
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