Inconsistent subscriber behaviour

[stephb9959]

Hi,

We are just starting to use brod and we really like it. We have found a possible issue and looking for either confirmation or help troubleshooting it.

Issue: erlang app running on a laptop (OSx M1) using brod code working perfectly using this remote AWS deployed Kafka server. Moving the same app, on the server where Kafka is running, causes the subscribers to no longer receive messages. The producers are still working fine. There are several C++ apps using the same Kafka server running also on the server without any issue. These apps consume/produce messages (have been working for 2+ years). Kafka server is running in AWS.

So we have ruled out networking issues as all ports are reachable and open. We are just wondering if there are known issues, or how can we further troubleshoot the issue.

Everything is running Erlang 25.0.4. Compiling using erlang.mk. Using master branch in brod.
Kafka is running on a Debian (buster) server running in AWS.

Code available: https://github.com/AriliaWireless/erltipbase

Thanks

[zmstone]

Hi.

Moving the same app, on the server where Kafka is running, causes the subscribers to no longer receive messages.

I'm afraid I need more information, were there any logs ?
did it work in the beginning but laster stopped working? or it does not start working at all ?