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https://issues.apache.org/jira/browse/ARROW-16646?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weston Pace resolved ARROW-16646.
---------------------------------
Fix Version/s: 9.0.0
Resolution: Fixed
Issue resolved by pull request 13236
[https://github.com/apache/arrow/pull/13236]
> [C++] HashJoin node can crash if a key column is a scalar
> ---------------------------------------------------------
>
> Key: ARROW-16646
> URL: https://issues.apache.org/jira/browse/ARROW-16646
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Weston Pace
> Assignee: Sasha Krassovsky
> Priority: Major
> Labels: pull-request-available
> Fix For: 9.0.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> This only happens when the node has a bloom filter pushed down into it. In
> that case it will attempt to hash the key columns in
> {{arrow::compute::HashJoinBasicImpl::ApplyBloomFiltersToBatch}} by calling
> {{Hashing32::HashBatch}} on a batch made up only of key columns.
> If one of those key columns happens to be a scalar, and not an array, then
> this method triggers a {{DCHECK}} and crashes.
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