Re: [I] Reading json `map` with non-nullable value schema doesn't error if values are actually null [arrow-rs]

["Jefffrey (via GitHub)" <gi...@apache.org>]

Jefffrey commented on issue #6391:
URL: https://github.com/apache/arrow-rs/issues/6391#issuecomment-5112255790

   looks to still be an issue
   
   some pointers:
   
   can add tests here, see example:
   
   https://github.com/apache/arrow-rs/blob/12091af35e5070dae33e86fbe988d9319521cd16/arrow-json/src/reader/mod.rs#L1281-L1326
   
   implementation/fix in this file: https://github.com/apache/arrow-rs/blob/12091af35e5070dae33e86fbe988d9319521cd16/arrow-json/src/reader/map_array.rs
   
   can see other nested types in how they handle nullability for reference:
   
   - https://github.com/apache/arrow-rs/blob/12091af35e5070dae33e86fbe988d9319521cd16/arrow-json/src/reader/struct_array.rs
   - https://github.com/apache/arrow-rs/blob/12091af35e5070dae33e86fbe988d9319521cd16/arrow-json/src/reader/run_end_array.rs
   - https://github.com/apache/arrow-rs/blob/12091af35e5070dae33e86fbe988d9319521cd16/arrow-json/src/reader/list_array.rs


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