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https://issues.apache.org/jira/browse/ARROW-9881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17186473#comment-17186473
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Dmitry Chigarev commented on ARROW-9881:
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Started working on it
> Add support for dictionary type to arrow::read_csv
> --------------------------------------------------
>
> Key: ARROW-9881
> URL: https://issues.apache.org/jira/browse/ARROW-9881
> Project: Apache Arrow
> Issue Type: Improvement
> Reporter: Dmitry Chigarev
> Priority: Minor
>
> For now, the only way to encode column with dict-encoding is to set
> {{auto_dict_encode = True}} at {{arrow::csv}}{{::}}{{ConvertOptions}}
> However, users should have the ability to specify column type as dict
> explicitly via {{column_types}} parameter. (Currently it is raising an
> exception that dict type is not supported)
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