jonvex commented on code in PR #11154:
URL: https://github.com/apache/hudi/pull/11154#discussion_r1612082279
##########
hudi-spark-datasource/hudi-spark-common/src/test/java/org/apache/hudi/TestHoodieSchemaUtils.java:
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@@ -239,6 +240,51 @@ void testMissingColumn(boolean allowDroppedColumns) {
}
}
+ @Test
+ void testFieldReordering() {
+ // field order changes and incoming schema is missing an existing field
+ Schema start = createRecord("reorderFields",
+ createPrimitiveField("field1", Schema.Type.INT),
+ createPrimitiveField("field2", Schema.Type.INT),
+ createPrimitiveField("field3", Schema.Type.INT));
+ Schema end = createRecord("reorderFields",
+ createPrimitiveField("field3", Schema.Type.INT),
+ createPrimitiveField("field1", Schema.Type.INT));
+ assertEquals(start, deduceWriterSchema(end, start, true));
+
+ // nested field ordering changes and new field is added
+ start = createRecord("reorderNestedFields",
+ createPrimitiveField("field1", Schema.Type.INT),
+ createPrimitiveField("field2", Schema.Type.INT),
+ createArrayField("field3", createRecord("nestedRecord",
+ createPrimitiveField("nestedField1", Schema.Type.INT),
+ createPrimitiveField("nestedField2", Schema.Type.INT),
+ createPrimitiveField("nestedField3", Schema.Type.INT))),
+ createPrimitiveField("field4", Schema.Type.INT));
+ end = createRecord("reorderNestedFields",
+ createPrimitiveField("field1", Schema.Type.INT),
+ createPrimitiveField("field2", Schema.Type.INT),
+ createPrimitiveField("field5", Schema.Type.INT),
+ createArrayField("field3", createRecord("nestedRecord",
+ createPrimitiveField("nestedField2", Schema.Type.INT),
+ createPrimitiveField("nestedField1", Schema.Type.INT),
+ createPrimitiveField("nestedField3", Schema.Type.INT),
+ createPrimitiveField("nestedField4", Schema.Type.INT))),
+ createPrimitiveField("field4", Schema.Type.INT));
+
+ Schema expected = createRecord("reorderNestedFields",
+ createPrimitiveField("field1", Schema.Type.INT),
+ createPrimitiveField("field2", Schema.Type.INT),
+ createArrayField("field3", createRecord("reorderNestedFields.field3",
Review Comment:
no, that doesn't look right
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