lucasbru commented on code in PR #18297:
URL: https://github.com/apache/kafka/pull/18297#discussion_r2010879588
##########
streams/src/main/java/org/apache/kafka/streams/kstream/SessionWindowedDeserializer.java:
##########
@@ -23,10 +23,20 @@
import org.apache.kafka.streams.StreamsConfig;
import org.apache.kafka.streams.state.internals.SessionKeySchema;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
import java.util.Map;
public class SessionWindowedDeserializer<T> implements
Deserializer<Windowed<T>> {
+ /**
+ * Configuration key for the windowed inner deserializer class.
Review Comment:
Can we put any more information into this (and the other) java doc comments
about the constants? Since this is a public string constant now, the use of the
constant should ideally be clear from the javadoc comments.
##########
docs/upgrade.html:
##########
@@ -430,6 +430,9 @@ <h5><a id="upgrade_servers_400_notable"
href="#upgrade_servers_400_notable">Nota
<li> See <a
href="https://cwiki.apache.org/confluence/x/B40ODg";>KIP-890</a> and
<a
href="https://cwiki.apache.org/confluence/x/8ItyEg";>KIP-1050</a> for more
details </li>
</ul>
+ <li>
+ The <code>window.size.ms</code> and
<code>window.inner.serde.class</code> in stream config are deprecated.
Review Comment:
This should not be in the 4.0 section.
##########
docs/upgrade.html:
##########
@@ -430,6 +430,9 @@ <h5><a id="upgrade_servers_400_notable"
href="#upgrade_servers_400_notable">Nota
<li> See <a
href="https://cwiki.apache.org/confluence/x/B40ODg";>KIP-890</a> and
<a
href="https://cwiki.apache.org/confluence/x/8ItyEg";>KIP-1050</a> for more
details </li>
</ul>
+ <li>
+ The <code>window.size.ms</code> and
<code>window.inner.serde.class</code> in stream config are deprecated.
Review Comment:
```suggestion
The <code>window.size.ms</code> and
<code>window.inner.serde.class</code> in `StreamsConfig` are deprecated. Use
the corresponding string constants defined in `TimeWindowedSerializer`,
`TimeWindowedDeserializer`, `SessionWindowedSerializer` and
`SessionWindowedDeserializer` instead.
```
Something like that? Could also be the actual string constants. But it's
good to make these notes actionable.
##########
streams/src/main/java/org/apache/kafka/streams/kstream/TimeWindowedSerializer.java:
##########
@@ -38,32 +48,42 @@ public TimeWindowedSerializer(final Serializer<T> inner) {
this.inner = inner;
}
- @SuppressWarnings("unchecked")
+ @SuppressWarnings({"deprecation", "unchecked"})
@Override
public void configure(final Map<String, ?> configs, final boolean isKey) {
- final String windowedInnerClassSerdeConfig = (String)
configs.get(StreamsConfig.WINDOWED_INNER_CLASS_SERDE);
- Serde<T> windowInnerClassSerde = null;
- if (windowedInnerClassSerdeConfig != null) {
+ String serializerConfigFrom = WINDOWED_INNER_SERIALIZER_CLASS;
Review Comment:
variable name suggestion: serializerConfigKey
Also in other places
##########
streams/src/main/java/org/apache/kafka/streams/StreamsConfig.java:
##########
@@ -823,13 +827,28 @@ public class StreamsConfig extends AbstractConfig {
+ CONFIG_ERROR_MSG
+ "\"NO_OPTIMIZATION\" by default.";
- /** {@code windowed.inner.class.serde} */
+ /**
+ * {@code windowed.inner.class.serde}
+ *
+ * @deprecated since 4.0.0.
Review Comment:
4.1.0
##########
streams/src/main/java/org/apache/kafka/streams/StreamsConfig.java:
##########
@@ -823,13 +827,28 @@ public class StreamsConfig extends AbstractConfig {
+ CONFIG_ERROR_MSG
+ "\"NO_OPTIMIZATION\" by default.";
- /** {@code windowed.inner.class.serde} */
+ /**
+ * {@code windowed.inner.class.serde}
+ *
+ * @deprecated since 4.0.0.
+ * Use {@link TimeWindowedSerializer#WINDOWED_INNER_SERIALIZER_CLASS} for
{@link TimeWindowedSerializer}.
+ * Use {@link TimeWindowedDeserializer#WINDOWED_INNER_DESERIALIZER_CLASS}
for {@link TimeWindowedDeserializer}.
+ * Use {@link SessionWindowedSerializer#WINDOWED_INNER_SERIALIZER_CLASS}
for {@link SessionWindowedSerializer}.
+ * Use {@link
SessionWindowedDeserializer#WINDOWED_INNER_DESERIALIZER_CLASS} for {@link
SessionWindowedDeserializer}.
+ */
+ @Deprecated
public static final String WINDOWED_INNER_CLASS_SERDE =
"windowed.inner.class.serde";
private static final String WINDOWED_INNER_CLASS_SERDE_DOC = " Default
serializer / deserializer for the inner class of a windowed record. Must
implement the " +
"<code>org.apache.kafka.common.serialization.Serde</code> interface.
Note that setting this config in KafkaStreams application would result " +
"in an error as it is meant to be used only from Plain consumer
client.";
- /** {@code window.size.ms} */
+ /**
+ * {@code window.size.ms}
+ *
+ * @deprecated since 4.0.0.
Review Comment:
4.1.0
##########
streams/src/main/java/org/apache/kafka/streams/kstream/TimeWindowedSerializer.java:
##########
@@ -38,32 +48,42 @@ public TimeWindowedSerializer(final Serializer<T> inner) {
this.inner = inner;
}
- @SuppressWarnings("unchecked")
+ @SuppressWarnings({"deprecation", "unchecked"})
@Override
public void configure(final Map<String, ?> configs, final boolean isKey) {
- final String windowedInnerClassSerdeConfig = (String)
configs.get(StreamsConfig.WINDOWED_INNER_CLASS_SERDE);
- Serde<T> windowInnerClassSerde = null;
- if (windowedInnerClassSerdeConfig != null) {
+ String serializerConfigFrom = WINDOWED_INNER_SERIALIZER_CLASS;
+ String windowedInnerSerializerClassConfig = (String)
configs.get(WINDOWED_INNER_SERIALIZER_CLASS);
Review Comment:
variable name suggestion: serializerConfigValue
Also in other places. I think the key/value relationship between these two
variables is helpful to understand this code.
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