JimGalasyn commented on code in PR #16336:
URL: https://github.com/apache/kafka/pull/16336#discussion_r1638992064
##########
docs/streams/upgrade-guide.html:
##########
@@ -303,6 +303,35 @@ <h3><a id="streams_api_changes_350"
href="#streams_api_changes_350">Streams API
adds a new config <code>default.client.supplier</code> that allows to
use a custom <code>KafkaClientSupplier</code> without any code changes.
</p>
+ <h3><a id="streams_api_changes_340"
href="#streams_api_changes_340">Streams API changes in 3.4.0</a></h3>
+ <p>
+ <a
href="https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=186878390";>KIP-770</a>
deprecates
+ config <code>cache.max.bytes.buffering</code> in favor of the newly
introduced config <code>statestore.cache.max.bytes</code>.
+ To improve monitoring, two new metrics
<code>input-buffer-bytes-total</code> and <code>cache-size-bytes-total</code>
+ were added at the DEBUG level. Note, that the KIP is only partially
implement in 3.4.0 release and config
+ <code>input.buffer.max.bytes</code> is not available yet.
+ </p>
+
+ <p>
+ <a
href="https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=211883356";>KIP-873</a>
enables you to multicast
+ result records to multiple partition of downstream sink topics and adds
functionality for choosing to drop result records without sending.
+ The <code>Integer StreamPartitioner.partition()</code> method is
deprecated and replaced by the newly added
+
<code>Optiona≶Set<Integer>>StreamPartitioner.partitions()</code>
method, that allows to return a set of partitions to send the record to.
Review Comment:
```suggestion
<code>Optiona≶Set<Integer>>StreamPartitioner.partitions()</code>
method, which enables returning a set of partitions to send the record to.
```
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