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https://issues.apache.org/jira/browse/ARROW-7653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17092952#comment-17092952
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Wes McKinney commented on ARROW-7653:
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Should indexes be all normalized to int32?
> [C++][Dataset] Handle DictType index mismatch better
> ----------------------------------------------------
>
> Key: ARROW-7653
> URL: https://issues.apache.org/jira/browse/ARROW-7653
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Francois Saint-Jacques
> Priority: Major
> Labels: dataset
>
> There will be a schema incompatibility raised if the index width doesn't
> match for fragments/sources.
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