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https://issues.apache.org/jira/browse/ARROW-6870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Erhardt resolved ARROW-6870.
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Fix Version/s: 6.0.0
Resolution: Fixed
Issue resolved by pull request 10527
[https://github.com/apache/arrow/pull/10527]
> [C#] 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
> Priority: Major
> Labels: pull-request-available
> Fix For: 6.0.0
>
> Time Spent: 9h
> Remaining Estimate: 0h
>
> 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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