JingGe commented on a change in pull request #18397:
URL: https://github.com/apache/flink/pull/18397#discussion_r790939938
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File path:
flink-connectors/flink-connector-kafka/src/main/java/org/apache/flink/connector/kafka/source/reader/deserializer/KafkaValueOnlyDeserializerWrapper.java
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@@ -36,10 +36,15 @@
/** A package private class to wrap {@link Deserializer}. */
class KafkaValueOnlyDeserializerWrapper<T> implements
KafkaRecordDeserializationSchema<T> {
+
private static final long serialVersionUID = 5409547407386004054L;
+
private static final Logger LOG =
LoggerFactory.getLogger(KafkaValueOnlyDeserializerWrapper.class);
+
private final Class<? extends Deserializer<T>> deserializerClass;
+ // always be false since this Deserializer is only used for value.
Review comment:
Code style consistency means in this case that developers, when they
come from `KafkaSerializerWrapper` will check the `isKey` at first to see if
`deserializer.configure(...)` has been used in
`KafkaValueOnlyDeserializerWrapper`. It is much easier to check it via instance
variable than digging into the code. Try to read both classes back and forth,
you will get the feeling.
It is not a big deal. I will change it back.
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