etseidl commented on code in PR #45285:
URL: https://github.com/apache/arrow/pull/45285#discussion_r1918848113
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cpp/src/parquet/column_writer.cc:
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@@ -1609,6 +1609,9 @@ class TypedColumnWriterImpl : public ColumnWriterImpl,
public TypedColumnWriter<
auto add_levels = [](std::vector<int64_t>& level_histogram,
::arrow::util::span<const int16_t> levels, int16_t
max_level) {
+ if (max_level == 0) {
Review Comment:
minor nit: should this be a constant?
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