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Posted to dev@arrow.apache.org by "Daniel Parubotchy (Jira)" <ji...@apache.org> on 2019/10/14 03:20:00 UTC

[jira] [Created] (ARROW-6870) Add Support for Dictionary Arrays and Dictionary Encoding

Daniel Parubotchy created ARROW-6870:
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             Summary: Add Support for Dictionary Arrays and Dictionary Encoding
                 Key: ARROW-6870
                 URL: https://issues.apache.org/jira/browse/ARROW-6870
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C#
            Reporter: Daniel Parubotchy


The C# implementaiton of Arrow doesn't support dictionary arrays, serialization/deserialization of dictionary batches, or dictionary encoding.

Dictionary arrays and dictionary encoding could provide a huge performance benefit for certain data sets.

I propose creating dictionary array types that correspond to the existing array types



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