[jira] [Created] (ARROW-5005) [C++] Add support for filter mask in AggregateFunction

[Francois Saint-Jacques (JIRA)]

Francois Saint-Jacques created ARROW-5005:
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             Summary: [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
             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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