nastra commented on a change in pull request #4372:
URL: https://github.com/apache/iceberg/pull/4372#discussion_r832370839
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File path: api/src/main/java/org/apache/iceberg/Schema.java
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@@ -109,6 +109,8 @@ public Schema(int schemaId, List<NestedField> columns,
Map<String, Integer> alia
static void validateIdentifierField(int fieldId, Map<Integer,
Types.NestedField> idToField,
Map<Integer, Integer>
idToParent) {
Types.NestedField field = idToField.get(fieldId);
+ Preconditions.checkArgument(field != null,
+ "Can not add filedId %d as an identifier field: field not exists",
fieldId);
Review comment:
maybe change it to `Preconditions.checkArgument(null != field, "Cannot
use fieldId %s: field does not exist", fieldId);`
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