> What was the problem with crashing? I imagine the problem was that it crashed the whole process, and so the processing of other, completely fine data that wa

> What was the problem with crashing? I imagine the problem was that it crashed the whole process, and so the processing of other, completely fine data that was happening in parallel, was aborted as well. Did that lead to that data being dropped on the floor? Who knows — but probably yes. And process restarts are not instantaneous, just so you know, and that's even without talking about bringing the application into the "stable stream processing" state, which includes establishing streaming connections with other up- and downstream services.