raulcd commented on code in PR #46859:
URL: https://github.com/apache/arrow/pull/46859#discussion_r2182905969
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cpp/src/arrow/compute/expression.cc:
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@@ -1267,6 +1267,15 @@ struct Inequality {
auto options = checked_pointer_cast<SetLookupOptions>(is_in_call->options);
+ // The maximum number of values in the is_in expression set of values
+ // in order to use the simplification.
+ // If the set is large there are performance implications, see:
+ // https://github.com/apache/arrow/issues/46777
+ static constexpr int16_t kIsInSimplificationMaxValueSet = 50;
Review Comment:
```suggestion
constexpr int16_t kIsInSimplificationMaxValueSet = 50;
```
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