[hotfix] [avro] Add test that validates deserialization of Kryo Seria…

…lizer in the absence of Avro

flink-core/src/main/java/org/apache/flink/api/common/typeutils/TypeSerializerSerializationUtil.java

@@ -30,6 +30,7 @@
 import org.apache.flink.core.memory.DataOutputViewStreamWrapper;
 import org.apache.flink.util.InstantiationUtil;
 import org.apache.flink.util.Preconditions;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

flink-core/src/test/java/org/apache/flink/api/java/typeutils/runtime/kryo/KryoSerializerCompatibilityTest.java

@@ -20,6 +20,7 @@
 
 import org.apache.flink.api.common.ExecutionConfig;
 import org.apache.flink.api.common.typeutils.CompatibilityResult;
+import org.apache.flink.api.common.typeutils.TypeSerializer;
 import org.apache.flink.api.common.typeutils.TypeSerializerConfigSnapshot;
 import org.apache.flink.api.common.typeutils.TypeSerializerSerializationUtil;
 import org.apache.flink.core.memory.DataInputViewStreamWrapper;
@@ -29,6 +30,7 @@
 import com.esotericsoftware.kryo.Serializer;
 import com.esotericsoftware.kryo.io.Input;
 import com.esotericsoftware.kryo.io.Output;
+
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
@@ -42,6 +44,7 @@
 import static org.hamcrest.CoreMatchers.is;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 
@@ -67,6 +70,22 @@ public void testMigrationStrategyForRemovedAvroDependency() throws Exception {
  assertFalse(compatResult.isRequiresMigration());
  }
 
+ @Test
+ public void testDeserializingKryoSerializerWithoutAvro() throws Exception {
+ final String resource = "serialized-kryo-serializer-1.3";
+
+ TypeSerializer<?> serializer;
+
+ try (InputStream in = getClass().getClassLoader().getResourceAsStream(resource)) {
+ DataInputViewStreamWrapper inView = new DataInputViewStreamWrapper(in);
+
+ serializer = TypeSerializerSerializationUtil.tryReadSerializer(inView, getClass().getClassLoader());
+ }
+
+ assertNotNull(serializer);
+ assertTrue(serializer instanceof KryoSerializer);
+ }
+
  /**
  * Verifies that reconfiguration result is INCOMPATIBLE if data type has changed.
  */
@@ -150,7 +169,7 @@ class FakeAvroClass {
  DataInputViewStreamWrapper inputView = new DataInputViewStreamWrapper(f)) {
 
  thrown.expectMessage("Could not find required Avro dependency");
- FakeAvroClass myTestClass = kryoSerializer.deserialize(inputView);
+ kryoSerializer.deserialize(inputView);
  }
  }
  }