问题
I use Kafka Connect for different purposes and it's working fine. It's more a curiosity question. Trying to figure out reading the code might take some time, so I'm asking here.. ( but I'll try read Kafka code anyway..)
I know a Connector is the one responsible for giving/updating configurations for the tasks, but what it is exactly ? Is it some piece of code that will run over the Connect cluster ? If yes, I imagine a worker did initiate it, but it does it arbitrary on one worker JVM ? Besides, is there only one instance of the connector , or is there multiple instance running at the same time ?
Same kind of questions for the Tasks, when we submit a connector to a Connect cluster (workers), how do they reach a consensus of " ok we will run this tasks in this worker, and this task in this another worker" ? How do they know about how many tasks are actually running or not ?
来源：https://stackoverflow.com/questions/58026235/kafka-connect-internals-how-connectors-and-tasks-got-deployed-around-the-conne