Suricata

Currently, output plugins receive a "thread_id" during per-thread initialization. The thread id is actually a slot number for an internal data structure and thus, not useful for correlating to the Suricata thread.

Instead, the per-thread init function should receive a correlating value to the Suricata threads. The semantic change should be unnoticed by output plugins as the id will continue to be unique for different Suricata threads.