aocsa commented on a change in pull request #11019:
URL: https://github.com/apache/arrow/pull/11019#discussion_r700731263
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File path: cpp/src/arrow/compute/kernels/vector_sort.cc
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@@ -1778,6 +1784,711 @@ class SortIndicesMetaFunction : public MetaFunction {
}
};
+// ----------------------------------------------------------------------
+// TopK/BottomK implementations
+
+using SelectKOptionsState = internal::OptionsWrapper<SelectKOptions>;
+const auto kDefaultTopKOptions = SelectKOptions::TopKDefault();
+const auto kDefaultBottomKOptions = SelectKOptions::BottomKDefault();
+
+const FunctionDoc top_k_doc(
+ "Return the indices that would partition an array array, record batch or
table\n"
+ "around a pivot",
+ ("@TODO"), {"input", "k"}, "PartitionNthOptions");
Review comment:
I though that kernel arity contains the number of required arguments for
the function. This function requires at least it is required the input and k.
So arity should be binary.
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