jorgecarleitao commented on a change in pull request #246:
URL: https://github.com/apache/arrow-rs/pull/246#discussion_r624665033
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File path: parquet/src/arrow/levels.rs
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@@ -311,11 +333,20 @@ impl LevelInfo {
} else if self.is_list {
// second exception, always increment after a list
self.max_definition + 1
+ } else if is_parent_struct && !self.is_nullable {
+ // if the parent is a non-null struct, don't increment
Review comment:
I am trying to wrap my head around this comment: `self.is_nullable` is
the nullability of the `parent` in this case?
I would expect something like `is_parent_struct_null` computed from the
nullability of the parent?
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