spring-leak-reproducer

This repository is a minimal reproducer for a leak exception coming from netty. It's using the scheduled functionality to call a function oftent to reproduce it more consistently.

setup

• start the database (can be done with docker compose up, alternatively a postgresql is needed with the credentials matching the application.yml)
• start the app (./mvnw spring-boot:run)
• after around ~3 minutes, the exception should have been thrown at least once already

diagnosis

gathered info during reproduction phase:

• the .reduce() in the CommandService class in line 35 seems to be the faulty line
• exchanging it with a .collectList().map { l -> l.sum() } results in no error thrown