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[jira] [Created] (ARROW-4061) [Rust] [Parquet] Implement "spaced" version for non-dictionary encoding/decoding


Chao Sun created ARROW-4061:
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             Summary: [Rust] [Parquet] Implement "spaced" version for non-dictionary encoding/decoding
                 Key: ARROW-4061
                 URL: https://issues.apache.org/jira/browse/ARROW-4061
             Project: Apache Arrow
          Issue Type: Sub-task
          Components: Rust
            Reporter: Chao Sun
            Assignee: Chao Sun


To support Parquet/Arrow encoding/decoding, we need to implement a "spaced" version where slots for null values should be filled with undefined bytes. 



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