huaxingao commented on code in PR #15977:
URL: https://github.com/apache/iceberg/pull/15977#discussion_r3125742920
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api/src/main/java/org/apache/iceberg/types/Types.java:
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@@ -880,12 +880,22 @@ private NestedField(
this.doc = doc;
this.initialDefault = castDefault(initialDefault, type);
this.writeDefault = castDefault(writeDefault, type);
+ Preconditions.checkArgument(
+ isOptional || this.initialDefault != Literal.ofNull(),
+ "Cannot use null initial default for required field: %s",
+ name);
+ Preconditions.checkArgument(
+ isOptional || this.writeDefault != Literal.ofNull(),
+ "Cannot use null write default for required field: %s",
+ name);
}
private static Literal<?> castDefault(Literal<?> defaultValue, Type type) {
if (type.isNestedType() && defaultValue != null) {
Review Comment:
Fixed. Thanks!
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