MINOR: Updating docs for enabling optimizations (#222)
Companion changes from apache/kafka#7099 in AK repo.
Reviewers: Jim Galasyn <jim.galasyn@confluent.io>, Matthias J. Sax <mjsax@apache.org>
diff --git a/23/streams/upgrade-guide.html b/23/streams/upgrade-guide.html
index 4b3dac2..59f7b19 100644
--- a/23/streams/upgrade-guide.html
+++ b/23/streams/upgrade-guide.html
@@ -81,6 +81,14 @@
</p>
<p>
+ As of 2.3.0 we've updated how to turn on optimizations. Now, to enable optimizations, you need to do two things.
+ First, add this line to your properties, <code>properties.setProperty(StreamsConfig.TOPOLOGY_OPTIMIZATION, StreamsConfig.OPTIMIZE);</code>, as you have done before.
+ Second, when constructing your <code>KafkaStreams</code> instance, you'll need to pass your configuration properties when building your
+ topology by using the overloaded <code>StreamsBuilder.build(Properties)</code> method.
+ For example, <code>KafkaStreams myStream = new KafkaStreams(streamsBuilder.build(properties), properties)</code>.
+ </p>
+
+ <p>
In 2.3.0 we have added default implementation to <code>close()</code> and <code>configure()</code> for <code>Serializer</code>,
<code>Deserializer</code> and <code>Serde</code> so that they can be implemented by lambda expression.
For more details please read <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-331+Add+default+implementation+to+close%28%29+and+configure%28%29+for+Serializer%2C+Deserializer+and+Serde">KIP-331</a>.
