Make dispatcherd min_workers literally 4 (#16421)

assisted-by: claude

awx/main/dispatch/config.py

@@ -25,7 +25,7 @@ def get_dispatcherd_config(for_service: bool = False, mock_publish: bool = False
         "version": 2,
         "service": {
             "pool_kwargs": {
-                "min_workers": settings.JOB_EVENT_WORKERS,
+                "min_workers": settings.DISPATCHER_MIN_WORKERS,
                 "max_workers": max_workers,
                 # This must be less than max_workers to make sense, which is usually 4
                 # With reserve of 1, after a burst of tasks, load needs to down to 4-1=3

awx/main/tests/functional/management/test_dispatcherd.py

@@ -8,7 +8,7 @@ from awx.main.management.commands.dispatcherd import _hash_config
 def test_dispatcherd_config_hash_is_stable(settings, monkeypatch):
     monkeypatch.setenv('AWX_COMPONENT', 'dispatcher')
     settings.CLUSTER_HOST_ID = 'test-node'
-    settings.JOB_EVENT_WORKERS = 1
+    settings.DISPATCHER_MIN_WORKERS = 1
     settings.DISPATCHER_SCHEDULE = {}
 
     config_one = get_dispatcherd_config(for_service=True)

awx/settings/defaults.py

@@ -215,6 +215,9 @@ LOCAL_STDOUT_EXPIRE_TIME = 2592000
 # events into the database
 JOB_EVENT_WORKERS = 4
 
+# Minimum number of workers for the dispatcher (dispatcherd) process pool
+DISPATCHER_MIN_WORKERS = 4
+
 # The number of seconds to buffer callback receiver bulk
 # writes in memory before flushing via JobEvent.objects.bulk_create()
 JOB_EVENT_BUFFER_SECONDS = 1