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https://issues.apache.org/jira/browse/ARROW-5005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16800955#comment-16800955
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Benjamin Kietzman commented on ARROW-5005:
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Should this be added to `UnaryKernel/BinaryKernel` as `CallMasked` or so? It
seems like it might be generally useful and fairly straightforward to provide a
naive default impl
> [C++] Add support for filter mask in AggregateFunction
> ------------------------------------------------------
>
> Key: ARROW-5005
> URL: https://issues.apache.org/jira/browse/ARROW-5005
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Francois Saint-Jacques
> Assignee: Francois Saint-Jacques
> Priority: Major
> Fix For: 0.14.0
>
>
> The aggregate kernels don't support mask (the result of a filter). Add the
> the following method to `AggregateFunction`.
> {code:c++}
> virtual Status ConsumeWithFilter(const Array& input, const Array& mask, void*
> state) const = 0;
> {code}
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