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Posted to jira@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2021/07/26 19:03:00 UTC

[jira] [Created] (ARROW-13451) [C++][Compute] Consider removing ScalarAggregateKernel

Ben Kietzman created ARROW-13451:
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             Summary: [C++][Compute] Consider removing ScalarAggregateKernel
                 Key: ARROW-13451
                 URL: https://issues.apache.org/jira/browse/ARROW-13451
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Ben Kietzman


Scalar aggregation does not incur large memory overhead for the associated KernelState objects, so maybe it'd be acceptable to remove explicit scalar aggregation kernels in favor of reusing grouped aggregation kernels with a single group. This would decrease our maintenance burden significantly, and if the benchmarks don't show a regression for single-group aggregation then there's no reason not to



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