[jira] [Created] (KAFKA-7355) Topic Configuration Changes are not applied until reboot

[Stephane Maarek (JIRA)]

Stephane Maarek created KAFKA-7355:
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             Summary: Topic Configuration Changes are not applied until reboot
                 Key: KAFKA-7355
                 URL: https://issues.apache.org/jira/browse/KAFKA-7355
             Project: Kafka
          Issue Type: Bug
          Components: config, core
    Affects Versions: 2.0.0
            Reporter: Stephane Maarek


Steps to reproduce:

{code}
kafka-topics --zookeeper 127.0.0.1:2181 --create --topic employee-salary 
--partitions 1 --replication-factor 1

kafka-configs --zookeeper 127.0.0.1:2181 --alter --entity-type topics 
--entity-name employee-salary --add-config 
cleanup.policy=compact,min.cleanable.dirty.ratio=0.001,segment.ms=5000

kafka-configs --zookeeper 127.0.0.1:2181 --alter --entity-type topics 
--entity-name employee-salary

kafka-console-producer --broker-list 127.0.0.1:9092 --topic employee-salary 
--property parse.key=true --property key.separator=,
{code}

Try publishing a bunch of data, and no segment roll over will happen (even 
though segment.ms=5000). I looked at the kafka directory and the kafka logs to 
ensure 

I noticed the broker processed the notification of config changes, but the 
behaviour was not updated to use the new config values nonetheless. 

After restarting the broker, the expected behaviour is observed



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