Expected Behavior

As a user, I may want to mute Elasticsearch deprecation warnings, because I cannot fix them immediately and want to prevent flooding logs with repeated messages.

There should be a configuration option in the config file that mutes ES deprecation warnings.

Current Behavior

2021-02-24T08:30:07.169-05:00 WARN  [RestClient] request [GET http://1.1.1.1:9200/_clu

Atm, key is not a reserved key word in ksqlDB. Thus users could use it as a name for streams/tables/columns etc. We should add key as a reserved key word though to make sure we can use it if we evolve the language further.

Basically, we don't need to have kafka-console-consumer, we have mill instead: https://github.com/ThreeDotsLabs/watermill/tree/master/tools/mill

It would be nice to replace it in all examples.

我看到可以通过Prometheus搭建监控环境，如果有图文，更容易理解．