HuaHuaY commented on code in PR #50807:
URL: https://github.com/apache/arrow/pull/50807#discussion_r3901946938
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cpp/src/parquet/statistics.cc:
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@@ -870,18 +1115,86 @@ class TypedStatisticsImpl : public
TypedStatistics<DType> {
this->has_distinct_count_ = false;
// Null count calculation is cheap and enabled by default.
this->has_null_count_ = true;
+ // NaN counts are collected alongside floating-point bounds and enabled by
+ // default.
+ if constexpr (std::same_as<DType, FLBAType>) {
Review Comment:
We should init the value for double/float/float16 types.
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