Jörn Horstmann created ARROW-10298:
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             Summary: [Rust] Incorrect offset handling in iterator over 
dictionary keys
                 Key: ARROW-10298
                 URL: https://issues.apache.org/jira/browse/ARROW-10298
             Project: Apache Arrow
          Issue Type: Bug
          Components: Rust
            Reporter: Jörn Horstmann


The NullableIterator used by DictionaryArray.keys calls ArrayData.is_null 
without taking the offset of that ArrayData into account. It would probably be 
better if ArrayData itself handled the offset in that method.

The iterator implementation could now also be replaced with the PrimitiveIter 
that was recently added



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