KAFKA-7650: make auto.create.topics.enable dynamically configurable

[xiowu0]

KAFKA-7650: make auto.create.topics.enable dynamically configurable

tested auto.create.topics.enable can be dynamically configured after change.

Committer Checklist (excluded from commit message)

• Verify design and implementation
• Verify test coverage and CI build status
• Verify documentation (including upgrade notes)

[mrsrinivas]

Thank you @xiowu0 for the PR!!!

since this PR is related to public interface change, it requires KIP. Where the community have discussion and voting for it.

Please check this link: Kafka Improvement Proposals

thoughts @mjsax @omkreddy @guozhangwang?

[mrsrinivas]

About code changes, Are we stopping the client in other scenario like this,

when auto.create.topics.enable=false at broker side especially in multi-tenant cluster, but client make the configuration to true and start creating as many topics as they want. That should not happen.

[xiowu0]

About code changes, Are we stopping the client in other scenario like this,

when auto.create.topics.enable=false at broker side especially in multi-tenant cluster, but client make the configuration to true and start creating as many topics as they want. That should not happen.

If either client or broker don't allow auto topic creation, the auto topic creation will be disabled.

Setting this at broker side, it is sufficient to prevent auto topic creation. This configuration is only for auto topic creation, it doesn't affect the topic creation via create topic API.

[xiowu0]

@mrsrinivas I don't know if it requires a KIP, since it is a very small change. It only makes existing configuration dynamic configurable.