nevi-me opened a new issue #395:
URL: https://github.com/apache/arrow-rs/issues/395
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
There is an arrow + parquet user that has encountered the need for a
`arrow::datatypes::DataType::Map`. A map is a logical type for a physical type
`List<Struct<key={Primitive},value={Primitive}>>`, so it shouldn't be as hard
to implement as say `Union`.
**Describe the solution you'd like**
To add support for `DataType::Map` in the least possible way required to
unblock the user. i.e. we might not want to support it in `arrow::compute`, but
might want to support it in:
- [ ] `arrow::array`
- [ ] `arrow::datatypes`
- [ ] `arrow::json`
- [ ] `arrow::ipc`
**Describe alternatives you've considered**
None considered.
**Additional context**
Here's a thread describing the issue (not sure if it requires signing in)
https://delta-users.slack.com/archives/C013LCAEB98/p1622663872101400
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