mapleFU commented on code in PR #35989:
URL: https://github.com/apache/arrow/pull/35989#discussion_r1252195411
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cpp/src/parquet/statistics.cc:
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@@ -609,9 +618,11 @@ class TypedStatisticsImpl : public TypedStatistics<DType> {
}
if (HasNullCount()) {
s.set_null_count(this->null_count());
+ // num_values_ is reliable and it means number of non-null values.
+ s.all_null_value = num_values_ == 0;
}
- // num_values_ is reliable and it means number of non-null values.
- s.all_null_value = num_values_ == 0;
+ // Currently, distinct count would not be written.
+ // So, not call set_distinct_count.
Review Comment:
Hmmm that's merge. I think Merge is different from Reset
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