zanmato1984 commented on code in PR #42106:
URL: https://github.com/apache/arrow/pull/42106#discussion_r1635725877
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cpp/src/arrow/compute/expression.h:
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@@ -56,6 +59,9 @@ class ARROW_EXPORT Expression {
const Kernel* kernel = NULLPTR;
std::shared_ptr<KernelState> kernel_state;
TypeHolder type;
+ // Whether the entire call (including all its arguments) is
selection-vector-aware
+ bool selection_vector_aware = false;
+ std::shared_ptr<SpecialForm> special_form = NULLPTR;
Review Comment:
Yeah, a kernel will claim itself as `selection_vector_aware` here:
https://github.com/apache/arrow/pull/42106/files#diff-c275e8c64a3935e84eaf970584e61b0d3db88fa5b052965505edf8126526c80eR527-R532
if it has special execution path to deal with the given selection vector
directly.
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