Fokko commented on code in PR #13087:
URL: https://github.com/apache/iceberg/pull/13087#discussion_r2251130609
##########
core/src/main/java/org/apache/iceberg/MetricsUtil.java:
##########
@@ -172,21 +172,29 @@ public static MetricsModes.MetricsMode metricsMode(
"Lower bound",
DataFile.LOWER_BOUNDS,
Types.NestedField::type,
- (file, field) ->
- file.lowerBounds() == null
- ? null
- : Conversions.fromByteBuffer(
- field.type(),
file.lowerBounds().get(field.fieldId()))),
+ (file, field) -> {
+ if (file.lowerBounds() == null) {
+ return null;
+ }
+ Object value =
+ Conversions.fromByteBuffer(
+ field.type(), file.lowerBounds().get(field.fieldId()));
+ return (value instanceof java.util.UUID) ? value.toString() :
value;
Review Comment:
Sorry, my brain is still on vacation, it looks good:
https://github.com/apache/iceberg/blob/76b2f875ff14f0ddeb80bfa63e819eeec3047975/api/src/main/java/org/apache/iceberg/types/Conversions.java#L170-L171
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