Thanks a lot for this KIP. I am not sure what you mean by
> which could potentially break older versions of Kafka brokers The metadata that is exchange, is not interpreted by the brokers. The problem with upgrading the metadata format affect only Kafka Streams instances. If we don't provide an upgrade strategy, changing the metadata format required to stop all running application instances, before the instances can be restarted with the new code. However, this implies downtime for an application and is thus not acceptable. -Matthias On 2/24/18 11:11 AM, Richard Yu wrote: > Hi all, > > I would like to discuss a KIP I've submitted : > https://cwiki.apache.org/confluence/display/KAFKA/KIP-262%3A+Metadata+should+include+number+of+state+stores+for+task > > > Regards, > Richard Yu >
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