[jira] [Resolved] (ARROW-14185) [C++] HashJoinNode should validate HashJoinNodeOptions

["David Li (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-14185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Li resolved ARROW-14185.
------------------------------
    Resolution: Fixed

Issue resolved by pull request 13051
[https://github.com/apache/arrow/pull/13051]

> [C++] HashJoinNode should validate HashJoinNodeOptions
> ------------------------------------------------------
>
>                 Key: ARROW-14185
>                 URL: https://issues.apache.org/jira/browse/ARROW-14185
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: David Li
>            Assignee: Jabari Booker
>            Priority: Major
>              Labels: good-first-issue, pull-request-available, query-engine
>             Fix For: 9.0.0
>
>          Time Spent: 2h 10m
>  Remaining Estimate: 0h
>
> At the very least key_cmp needs to match the number of join columns, there may be other invariants to uphold. Probably all the ones from the [semi-join PR|https://github.com/apache/arrow/pull/10845/files#diff-1028a02ecee91ae8a9fbb7318e1ce650760716d317457d48e0740c802287fbdbR38]: there must be the same, non-zero number of keys on both sides.



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