[jira] [Commented] (ARROW-5949) [Rust] Implement DictionaryArray

["Andy Thomason (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-5949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16984568#comment-16984568 ] 

Andy Thomason commented on ARROW-5949:
--------------------------------------

I've implemented this in two of our internal I/O libraries at work and should be able to help out if I get

the time. I've sent a test generator to Andy which should help. We have a huge repository of Arrow files to test it on.

 

> [Rust] Implement DictionaryArray
> --------------------------------
>
>                 Key: ARROW-5949
>                 URL: https://issues.apache.org/jira/browse/ARROW-5949
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Rust
>            Reporter: David Atienza
>            Priority: Major
>
> I am pretty new to the codebase, but I have seen that DictionaryArray is not implemented in the Rust implementation.
> I went through the list of issues and I could not see any work on this. Is there any blocker?
>  
> The specification is a bit [short|https://arrow.apache.org/docs/format/Layout.html#dictionary-encoding] or even [non-existant|https://arrow.apache.org/docs/format/Metadata.html#dictionary-encoding], so I am not sure how to implement it myself.



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