Parth Brahmbhatt created KAFKA-2035:
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Summary: Add a topic config cache.
Key: KAFKA-2035
URL: https://issues.apache.org/jira/browse/KAFKA-2035
Project: Kafka
Issue Type: Task
Reporter: Parth Brahmbhatt
Assignee: Parth Brahmbhatt
Currently the topic config is all about Log configuration so we have a
TopicConfigManager which takes in a Log instance and keeps updating that
instance's config instance as and when the topic config is updated. The topic
config update notifications are sent using zk watchers by Controller.
I propose to introduce a TopicConfigCache which will be updated by
TopicConfigManager on any config changes. The log instance and any other
component (like the authorizer mentioned in KAFKA-1688) will have a reference
to TopicConfigCache using which they will access the topic configs.
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