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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/12/23 11:27:16 UTC

[GitHub] [arrow-rs] alamb commented on issue #1091: Ergonomic field and schema creation with Metadata

alamb commented on issue #1091:
URL: https://github.com/apache/arrow-rs/issues/1091#issuecomment-1000238967


   @jorgecarleitao  I looked at the `Field` and `Schema` in arrow2. They also use the seemingly inconsistent `Option<BTreeMap<String, String>>` and `HashMap<String, String>`. Do you  remember if there is a reason for that inconsistency (both the `Option` and also the different `Map` structure)?
   
   https://github.com/jorgecarleitao/arrow2/blob/main/src/datatypes/schema.rs#L30
   https://github.com/jorgecarleitao/arrow2/blob/main/src/datatypes/field.rs#L39


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