Github user tzulitai commented on a diff in the pull request:
https://github.com/apache/flink/pull/3562#discussion_r106776304
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/state/StateBackendTestBase.java
---
@@ -162,22 +176,422 @@ protected CheckpointStreamFactory
createStreamFactory() throws Exception {
}
@Test
+ public void testBackendUsesRegisteredKryoDefaultSerializer() throws
Exception {
+ CheckpointStreamFactory streamFactory = createStreamFactory();
+ Environment env = new DummyEnvironment("test", 1, 0);
+ AbstractKeyedStateBackend<Integer> backend =
createKeyedBackend(IntSerializer.INSTANCE, env);
+
+ // cast because our test serializer is not typed to TestPojo
+ env.getExecutionConfig()
+ .addDefaultKryoSerializer(TestPojo.class,
(Class) ExceptionThrowingTestSerializer.class);
+
+ TypeInformation<TestPojo> pojoType = new
GenericTypeInfo<>(TestPojo.class);
+
+ // make sure that we are in fact using the KryoSerializer
+ assertTrue(pojoType.createSerializer(env.getExecutionConfig())
instanceof KryoSerializer);
+
+ pojoType.createSerializer(env.getExecutionConfig());
+
+ ValueStateDescriptor<TestPojo> kvId = new
ValueStateDescriptor<>("id", pojoType);
+
+ ValueState<TestPojo> state =
backend.getPartitionedState(VoidNamespace.INSTANCE,
VoidNamespaceSerializer.INSTANCE, kvId);
+
+ // backends that eagerly serializer will fail when updating
state, others will
+ // fail only when performing the snapshot
+ int numExceptions = 0;
+
+ backend.setCurrentKey(1);
+
+ try {
+ state.update(new TestPojo("u1", 1));
+ } catch (ExpectedKryoTestException e) {
+ numExceptions++;
+ } catch (RuntimeException e) {
+ if (e.getCause() instanceof ExpectedKryoTestException) {
+ numExceptions++;
+ } else {
+ throw e;
+ }
+ }
+
+ try {
+ runSnapshot(backend.snapshot(682375462378L, 2,
streamFactory, CheckpointOptions.forFullCheckpoint()));
+ } catch (ExpectedKryoTestException e) {
+ numExceptions++;
+ }
+
+ assertEquals("Didn't see the expected Kryo exception.", 1,
numExceptions);
+ }
+
+ @Test
+ public void
testBackendUsesRegisteredKryoDefaultSerializerUsingGetOrCreate() throws
Exception {
--- End diff --
Same comments as in the `testBackendUsesRegisteredKryoDefaultSerializer`
test
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