[GitHub] [arrow-rs] nevi-me commented on a change in pull request #246: fix parquet max_definition for non-null structs

[GitBox <gi...@apache.org>]

nevi-me commented on a change in pull request #246:
URL: https://github.com/apache/arrow-rs/pull/246#discussion_r624717017



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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:
       Yes, self is the parent, so if the parent is a null struct ...
   
   Interestingly, I don't need the 'is_parent_steuct' variable, because '!self.is_list' means that self is a struct at this point in the code. I'll tweak the logic later tonight




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