@big-carpet-38439 ^^ (sorry to pin you directly, but looks like you are the owner of this class 🙂 )

could we just setup a callback function in the producer.send() function? like

_producer.send(record, callback);

The reason why I am suggesting this is: looks like we(my company) have some kafka setup issue, our datahub-frontend could not produce the msg to kafka broker then the thread will stuck in the

_producer.flush();

step. After several clicks in the UI, I think we exhaust the play framework thread pool. In order to process a new request from UI, play will wait for the

TrackingController

to return, which seems has an timeout as 60s

Well that's no good

Yeah this is just an oversight - we definitely should change this to be an async callback

Nice catch

trying to figure out what our Kafka setup's issue

hey @big-carpet-38439, I got some time today, if you have not changed it I could do the change