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https://issues.apache.org/jira/browse/ARROW-8374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17111583#comment-17111583
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Wes McKinney commented on ARROW-8374:
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Hm, unfortunately this seems to be hidden away in the Arrow->pandas conversion
path
https://github.com/apache/arrow/blob/master/cpp/src/arrow/python/arrow_to_pandas.cc#L1468
> [R] Table to vector of DictonaryType will error when Arrays don't have the
> same Dictionary per array
> ----------------------------------------------------------------------------------------------------
>
> Key: ARROW-8374
> URL: https://issues.apache.org/jira/browse/ARROW-8374
> Project: Apache Arrow
> Issue Type: Bug
> Components: R
> Reporter: Francois Saint-Jacques
> Priority: Major
> Fix For: 1.0.0
>
>
> The conversion should accommodate Unifying the dictionary before converting,
> otherwise the indices are simply broken
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