[GitHub] [arrow-rs] WaterKnight1998 opened a new issue, #3774: arrow_json::LineDelimitedWriter: Write nulls

["WaterKnight1998 (via GitHub)" <gi...@apache.org>]

WaterKnight1998 opened a new issue, #3774:
URL: https://github.com/apache/arrow-rs/issues/3774

   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
   
   I am trying to convert Parquet data written using Avro Parquet Writer of Java. This parquet includes the Avro Schema inside the key `parquet.avro.schema` of the metadata, I want to convert this parquet data back to Avro using this schema and programmed in Rust.
   
   I have tried to solve this challenge by converting Parquet into a json with string `arrow_json::LineDelimitedWriter` and then read this data with `serde_json` and serialise to Avro. In Avro Serializer I need that nullable fields are provided as `Option<T>`. The problem is that when I write the data into JSON null fields are skipped and I can't recover them as Options with `serde_json`
   
   **Describe the solution you'd like**
   
   I would like that `arrow_json` has a parameter for specifying if you want to output the null field.
   
   


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Re: [I] arrow_json::LineDelimitedWriter: Write nulls [arrow-rs]

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

tustvold closed issue #3774: arrow_json::LineDelimitedWriter: Write nulls
URL: https://github.com/apache/arrow-rs/issues/3774


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