emkornfield commented on code in PR #544:
URL: https://github.com/apache/parquet-format/pull/544#discussion_r2677169843


##########
src/main/flatbuf/parquet3.fbs:
##########
@@ -0,0 +1,224 @@
+namespace parquet.format3;
+
+// Optimization notes
+// 1. Statistics are stored in integral types if their size is fixed, 
otherwise prefix + suffix
+// 2. ColumnMetaData.encoding_stats are removed, they are replaced with
+//    ColumnMetaData.is_fully_dict_encoded.
+// 3. RowGroups are limited to 2GB in size, so we can use int for sizes.

Review Comment:
   I think this and the item below are out of date (we are using `long` now) 
and can keep things absolute?



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