Github user StefanRRichter commented on a diff in the pull request:
https://github.com/apache/flink/pull/4026#discussion_r119348235
--- Diff:
flink-core/src/test/java/org/apache/flink/api/java/typeutils/runtime/PojoSerializerTest.java
---
@@ -606,6 +665,45 @@ public void
testSerializerSerializationFailureResilience() throws Exception {
verifyPojoSerializerConfigSnapshotWithEmptyNestedSerializers(config,
deserializedConfig);
}
+ @SuppressWarnings("unchecked")
+ @Test
+ public void testNonDuplicatedStatelessSerializersInConfigSnapshot()
throws IOException {
+ PojoSerializer<TestUserClassWithSameFieldTypes> pojoSerializer
= (PojoSerializer<TestUserClassWithSameFieldTypes>)
+
TypeExtractor.getForClass(TestUserClassWithSameFieldTypes.class).createSerializer(new
ExecutionConfig());
+
+ // snapshot configuration and serialize to bytes
+
PojoSerializer.PojoSerializerConfigSnapshot<TestUserClassWithSameFieldTypes>
config = pojoSerializer.snapshotConfiguration();
+ byte[] serializedConfig;
+ try (
+ ByteArrayOutputStream out = new
ByteArrayOutputStream()) {
+
TypeSerializerSerializationUtil.writeSerializerConfigSnapshot(new
DataOutputViewStreamWrapper(out), config);
+ serializedConfig = out.toByteArray();
+ }
+
+ // read configuration from bytes
+ PojoSerializer.PojoSerializerConfigSnapshot<TestUserClass>
deserializedConfig;
+ try(ByteArrayInputStream in = new
ByteArrayInputStream(serializedConfig)) {
--- End diff --
There is also a `ByteArrayInputStreamWithPos`.
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