alamb commented on code in PR #7585:
URL: https://github.com/apache/arrow-rs/pull/7585#discussion_r2411741334


##########
parquet/src/arrow/array_reader/byte_array_dictionary.rs:
##########
@@ -165,6 +165,13 @@ where
     }
 
     fn consume_batch(&mut self) -> Result<ArrayRef> {
+        if self.record_reader.num_values() == 0 {

Review Comment:
   @vakum reports this change caused a regression in some other deeply nested 
structure
   - https://github.com/apache/arrow-rs/issues/8404#issuecomment-3378439532
   
   @albertlockett  is that something you can look into?



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