echauchot commented on code in PR #19586:
URL: https://github.com/apache/flink/pull/19586#discussion_r859924128


##########
flink-connectors/flink-connector-cassandra/src/test/java/org/apache/flink/streaming/connectors/cassandra/CassandraConnectorBaseTest.java:
##########
@@ -97,29 +94,33 @@
 import static org.hamcrest.Matchers.samePropertyValuesAs;
 import static org.junit.Assert.assertTrue;
 
-/** IT cases for all cassandra sinks. */
+/**
+ * Base class for IT cases for all Cassandra sinks. This class relies on 
Cassandra testContainer
+ * that needs to use a ClassRule. Parametrized tests to not work with 
ClassRules so the actual
+ * testCase classes define the tested version and manage the container.
+ */
 @SuppressWarnings("serial")
 // NoHostAvailableException is raised by Cassandra client under load while 
connecting to the cluster
 @RetryOnException(times = 3, exception = NoHostAvailableException.class)
-public class CassandraConnectorITCase
+public abstract class CassandraConnectorBaseTest

Review Comment:
   :+1: 



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