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https://issues.apache.org/jira/browse/ARROW-5336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17251715#comment-17251715
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Antoine Pitrou commented on ARROW-5336:
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> By the time we arrive at `Array` any "deltaing" has been taken care of. So I
> believe I do not have to worry about delta dictionaries for this correct?
This is right.
> [C++] Implement arrow::Concatenate for dictionary-encoded arrays with unequal
> dictionaries
> ------------------------------------------------------------------------------------------
>
> Key: ARROW-5336
> URL: https://issues.apache.org/jira/browse/ARROW-5336
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Weston Pace
> Priority: Major
> Fix For: 3.0.0
>
>
> Currently (as of ARROW-3144) if any dictionary is different, an error is
> returned
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