pvary commented on code in PR #15843:
URL: https://github.com/apache/iceberg/pull/15843#discussion_r3086487291
##########
data/src/test/java/org/apache/iceberg/data/BaseFormatModelTests.java:
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@@ -628,6 +628,401 @@ void
testReaderBuilderRecordsPerBatchNotSupported(FileFormat fileFormat) throws
.isInstanceOf(UnsupportedOperationException.class);
}
+ /**
+ * Schema evolution: Adding column (reading with wider schema). Write with
DefaultSchema, read
+ * with additional optional columns. The new columns should be filled with
null values.
+ */
+ @ParameterizedTest
+ @FieldSource("FILE_FORMATS")
+ void testSchemaEvolutionAddColumn(FileFormat fileFormat) throws IOException {
+ DataGenerator dataGenerator = new DataGenerators.DefaultSchema();
+ Schema writeSchema = dataGenerator.schema();
+
+ List<Record> genericRecords = dataGenerator.generateRecords();
+ writeGenericRecords(fileFormat, writeSchema, genericRecords);
+
+ Schema readSchema =
+ new Schema(
+ Types.NestedField.required(1, "col_a", Types.StringType.get()),
+ Types.NestedField.required(2, "col_b", Types.IntegerType.get()),
+ Types.NestedField.required(3, "col_c", Types.LongType.get()),
+ Types.NestedField.required(4, "col_d", Types.FloatType.get()),
+ Types.NestedField.required(5, "col_e", Types.DoubleType.get()),
+ Types.NestedField.optional(6, "new_string_col",
Types.StringType.get()),
+ Types.NestedField.optional(7, "new_int_col",
Types.IntegerType.get()));
Review Comment:
Make this based on the `writeSchema`
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