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https://issues.apache.org/jira/browse/ARROW-14181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17441448#comment-17441448
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Kouhei Sutou commented on ARROW-14181:
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This requires ARROW-14310 and ARROW-14310 requires something. Is this intended?
> [C++][Compute] Hash Join support for dictionary
> ------------------------------------------------
>
> Key: ARROW-14181
> URL: https://issues.apache.org/jira/browse/ARROW-14181
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 6.0.0
> Reporter: Michal Nowakiewicz
> Assignee: Michal Nowakiewicz
> Priority: Critical
> Labels: pull-request-available, query-engine
> Fix For: 7.0.0, 6.0.1
>
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> Currently dictionary arrays are not supported at all as input columns to hash
> join.
> Add support for dictionary arrays in hash join for both key columns and
> payload columns.
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