mjsax commented on code in PR #12867:
URL: https://github.com/apache/kafka/pull/12867#discussion_r1024420977
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streams/src/main/java/org/apache/kafka/streams/kstream/SessionWindowedKStream.java:
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@@ -644,6 +644,16 @@ KTable<Windowed<K>, V> reduce(final Reducer<V> reducer,
final Named named,
final Materialized<K, V, SessionStore<Bytes,
byte[]>> materialized);
- // TODO: add javadoc
+ /**
+ * Configure when the aggregated result will be emitted for {@code
SessionWindowedKStream}.
+ * <p>
+ * For example, for {@link EmitStrategy#onWindowClose} strategy, the
aggregated result for a
+ * window will only be emitted when the window closes. For {@link
EmitStrategy#onWindowUpdate()}
+ * strategy, the aggregated result for a window will be emitted whenever
there is an update to
Review Comment:
> emitted whenever there is an update
Should we mention caching in addition?
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