Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/5272#discussion_r168176395
--- Diff:
flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/batch/connectors/cassandra/CassandraRowOutputFormat.java
---
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.batch.connectors.cassandra;
+
+import org.apache.flink.streaming.connectors.cassandra.ClusterBuilder;
+import org.apache.flink.types.Row;
+
+/**
+ * OutputFormat to write Flink {@link Row}s into a Cassandra cluster.
+ *
+ * @param <OUT> Type of elements to write, it must extend {@link Row}.
+ */
+public class CassandraRowOutputFormat<OUT extends Row> extends
CassandraOutputFormat<OUT> {
--- End diff --
I don't think we have to handle subclasses of `Row`. Change `<OUT extends
Row>` to `<Row>`?
---
