Kowshik Prakasam created KAFKA-10027:
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Summary: KIP-584: Implement read path for versioning scheme for
features
Key: KAFKA-10027
URL: https://issues.apache.org/jira/browse/KAFKA-10027
Project: Kafka
Issue Type: Sub-task
Reporter: Kowshik Prakasam
Goal is to implement various classes and integration for the read path of the
feature versioning system
([KIP-584|https://cwiki.apache.org/confluence/display/KAFKA/KIP-584%3A+Versioning+scheme+for+features]).
The ultimate plan is that the cluster-wide *finalized* features information is
going to be stored in ZK under the node {{/feature}}. The read path implemented
in this PR is centered around reading this *finalized* features information
from ZK, and, processing it inside the Broker.
Here is a summary of what's needed for this Jira (a lot of it is *new* classes):
* A facility is provided in the broker to declare it's supported features, and
advertise it's supported features via it's own {{BrokerIdZNode}} under a
{{features}} key.
* A facility is provided in the broker to listen to and propagate cluster-wide
*finalized* feature changes from ZK.
* When new *finalized* features are read from ZK, feature incompatibilities
are detected by comparing against the broker's own supported features.
* {{ApiVersionsResponse}} is now served containing supported and finalized
feature information (using the newly added tagged fields).
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