Rajini Sivaram created KAFKA-8119:
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Summary: KafkaConfig listener accessors may fail during dynamic
update
Key: KAFKA-8119
URL: https://issues.apache.org/jira/browse/KAFKA-8119
Project: Kafka
Issue Type: Bug
Components: core
Affects Versions: 2.2.0
Reporter: Rajini Sivaram
Assignee: Rajini Sivaram
Fix For: 2.3.0, 2.2.1
Noticed a test failure in DynamicBrokerReconfigurationTest where the test
accessing `KafkaConfig#listeners` during dynamic update of listeners threw an
exception. In general, most dynamic configs can be updated independently, but
listeners and listener security protocol map need to be updated together when
new listeners that are not in the map are added or an entry is removed from the
map along with the listener. We don't expect to see this failure in the
implementation code because dynamic config updates are on a single thread and
SocketServer processes the full update together and validates the full config
prior to applying the changes. But we should ensure that KafkaConfig#listeners,
KafkaConfig#advertisedListeners etc. work even if a dynamic update occurs
during the call since these methods are used in tests and could potentially be
used in implementation code in future from different threads.
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