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https://issues.apache.org/jira/browse/ARROW-12771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-12771:
-----------------------------------
Labels: pull-request-available (was: )
> [C++] Arrow compute hash_count skips following chunked arrays in streaming
> execution
> -------------------------------------------------------------------------------------
>
> Key: ARROW-12771
> URL: https://issues.apache.org/jira/browse/ARROW-12771
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Affects Versions: 4.0.0
> Reporter: Chenxi Li
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The parameter of {{MaybeReserve}} in {{has_count}}'s {{Consume}} function is
> incorrect.
> {code:java}
> MaybeReserve(counts_.length(), batch, [&](int64_t added_groups)
> {code}
> The {{counts_.length()}} means the buffer's byte size, it should be replaced
> with {{num_groups_}}. Otherwise, subsequent chunked arrays with more groups
> are skipped as {{counts_.length()}} is actually
> {{num_groups_*sizeof(int64_t)}}
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