RussellSpitzer commented on code in PR #5376:
URL: https://github.com/apache/iceberg/pull/5376#discussion_r1015583682


##########
api/src/main/java/org/apache/iceberg/DataFile.java:
##########
@@ -99,10 +99,24 @@ public interface DataFile extends ContentFile<DataFile> {
       optional(140, "sort_order_id", IntegerType.get(), "Sort order ID");
   Types.NestedField SPEC_ID = optional(141, "spec_id", IntegerType.get(), 
"Partition spec ID");
 
+  Types.StructType READABLE_METRICS_VALUE_TYPE =
+      Types.StructType.of(
+          optional(142, "column_size", Types.LongType.get(), "Total size on 
disk"),
+          optional(143, "value_count", Types.LongType.get(), "Total count, 
including null and NaN"),
+          optional(144, "null_value_count", Types.LongType.get(), "Null value 
count"),
+          optional(145, "nan_value_count", Types.LongType.get(), "NaN value 
count"),
+          optional(146, "lower_bound", Types.StringType.get(), "Lower bound in 
string form"),

Review Comment:
   For the other metrics in this struct, did we not have all the counts 
correctly before? I thought those all came out as longs anyway



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