TKthink

https://github.com/lf-edge/ekuiper/blob/0cef7657f254b24ad32192f8692d05e77d06cc4c/internal/io/mqtt/connection_pool.go#L31 this code. Why get the connectionSelector value as clientid instead of getting the clientid as clientid? get the connectionSelector always get "",it makes connectionPool always have nothing

> @TKthink Could you provide the rule spec and describe how to `swtich` the rule repeatedly? here is the rule: { "id": "rule_dc3e", "name": "", "triggered": true, "sql": "SELECT\n *\nFROM\n...

my suggestion is **DO NOT** actively panic unless during the program initialization phase,panic will destroy the stability