If you have applications that use the REST API, you will need to make changes to certificate validation.  For information about these changes, see


Streams 4.0 introduces a set of Java™ Management Extensions (JMX) APIs to provide programmatic access to configuration and status information for Streams objects, such as a domain and its instances, jobs, and resources. You can manage and monitor these objects by using a set of JMX beans.  For information about using these new APIs, see