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Posted to jira@arrow.apache.org by "Jorge (Jira)" <ji...@apache.org> on 2020/09/29 04:47:00 UTC

[jira] [Created] (ARROW-10128) [Rust] Dictionary-encoding is out of spec

Jorge created ARROW-10128:
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             Summary: [Rust] Dictionary-encoding is out of spec
                 Key: ARROW-10128
                 URL: https://issues.apache.org/jira/browse/ARROW-10128
             Project: Apache Arrow
          Issue Type: Task
          Components: Rust
            Reporter: Jorge


According to [the spec|https://arrow.apache.org/docs/format/Columnar.html#physical-memory-layout], every array can be dictionary-encoded, on which its values are encoded by a unique set of values.

However, none of our arrays support this encoding and the physical memory layout of this encoding is not being fulfilled.

We have a DictionaryArray, but, AFAIK, it does not respect the physical memory layout set out by the spec.



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