Jorge Leitão created ARROW-10449:
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Summary: [Rust] Make dictionary keys be a PrimitiveArray
Key: ARROW-10449
URL: https://issues.apache.org/jira/browse/ARROW-10449
Project: Apache Arrow
Issue Type: Improvement
Components: Rust
Affects Versions: 3.0.0
Reporter: Jorge Leitão
Assignee: Jorge Leitão
Currently, dictionary keys use a NullIterator to iterate them. However,
physically, they are fully allocated in memory and are interpretable as a
PrimitiveArray.
This issue's main purpose is to have `keys` return a `PrimitiveArray`, so that
users can use it as any other array.
This will also allow to remove `NullIter`.
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