RussellSpitzer commented on code in PR #5376:
URL: https://github.com/apache/iceberg/pull/5376#discussion_r1015582931
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api/src/main/java/org/apache/iceberg/DataFile.java:
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@@ -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:
Actually I was thinking about this more over the weekend, what if we had
lowerBound <Struct <Table's Schema>>
upperBound <Struct<Table's Schema>>
That way all of the types would be their original column types, I think the
only thing we need to do is make all the fields optional since we don't have
metrics for certain types. Or you could just select not on those columns.
This would kind of invert the current layout and i'm not sure how well that
fits but the layout would instead look like
metricName.columnToRead
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