Because SLF4J 1.x is so common nowadays, there is little incentive for many to update. (I want to stress that I am a huge proponent of abandoning StaticLoggerBinder and switching to a ServiceLoader approach, so I welcome SLF4J 2.x.) In addition there may be many people reluctant to upgrade because of worries that the upgrade will break their existing code. And those worries are not unfounded!

I propose that it would be valuable to keep a running list of applications and libraries that will break under SLF4J 2.x There may be a better place to maintain that list, but because I'm not aware of such a list, I'm opening this ticket.

Applications and Libraries Breaking with SLF4J 2.x

• Apache Spark: ticket SPARK-40489