MINOR: Add to upgrade.html file
Reviewers: Kowshik Prakasam Manikumar Reddy Boyang Chen
topics deletions to prevent a cluster from being harmed via
<a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-599%3A+Throttle+Create+Topic%2C+Create+Partition+and+Delete+Topic+Operations">KIP-599</a>
</li>
+ <li>
+ When new features become available in Kafka there are two main issues:
+ <ol>
+ <li>How do Kafka clients become aware of broker capabilities?</li>
+ <li>How does the broker decide which features to enable?</li>
+ </ol>
+ <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-584%3A+Versioning+scheme+for+features">KIP-584</a>
+ provides a flexible and operationally easy solution for client discovery, feature gating and rolling upgrades using a single restart.
+ </li>
<li>
The addition of <a href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-554%3A+Add+Broker-side+SCRAM+Config+API">KIP-554</a>
continues progress towards the goal of Zookeeper removal from Kafka. The addition of KIP-554
