snuyanzin commented on code in PR #19780:
URL: https://github.com/apache/flink/pull/19780#discussion_r988892634
##########
flink-table/flink-table-runtime/src/test/java/org/apache/flink/table/runtime/typeutils/LinkedListSerializerUpgradeTest.java:
##########
@@ -37,17 +35,10 @@
import static org.hamcrest.Matchers.is;
/** A {@link TypeSerializerUpgradeTestBase} for {@link LinkedListSerializer}.
*/
-@RunWith(Parameterized.class)
public class LinkedListSerializerUpgradeTest
Review Comment:
junit5 has issues if it is not public
```
java.lang.IllegalAccessError: tried to access class
org.apache.flink.table.runtime.typeutils.LinkedListSerializerUpgradeTest from
class
org.apache.flink.table.runtime.typeutils.LinkedListSerializerUpgradeTest$LinkedListSerializerVerifier$generated2$
at
org.apache.flink.table.runtime.typeutils.LinkedListSerializerUpgradeTest$LinkedListSerializerVerifier$generated2$.createUpgradedSerializer(LinkedListSerializerUpgradeTest.java:99)
at
org.apache.flink.api.common.typeutils.TypeSerializerUpgradeTestBase$ClassLoaderSafeUpgradeVerifier.createUpgradedSerializer(TypeSerializerUpgradeTestBase.java:171)
at
org.apache.flink.api.common.typeutils.TypeSerializerUpgradeTestBase.upgradedSerializerIsValidAfterMigration(TypeSerializerUpgradeTestBase.java:342)
...
```
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