benibus commented on code in PR #37418:
URL: https://github.com/apache/arrow/pull/37418#discussion_r1316108410
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cpp/src/arrow/compute/registry.cc:
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@@ -276,6 +276,7 @@ static std::unique_ptr<FunctionRegistry>
CreateBuiltInRegistry() {
// Register core kernels
RegisterScalarCast(registry.get());
RegisterDictionaryDecode(registry.get());
+ RegisterDictionaryCompaction(registry.get());
Review Comment:
Do we actually want to register these here or should that be done in the
`#if ARROW_COMPUTE` block below? Generally speaking, the "core" kernel library
is limited to casts and their dependencies - although there are a few
exceptions.
Granted, I'm pretty sure doing that would also necessitate moving the tests
out of `vector_hash_test.cc` since it's built/run unconditionally.
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