diff --git a/operators/multiclusterobservability/controllers/placementrule/placementrule_controller.go b/operators/multiclusterobservability/controllers/placementrule/placementrule_controller.go
index 93eebc5bd..ce031fb5b 100644
--- a/operators/multiclusterobservability/controllers/placementrule/placementrule_controller.go
+++ b/operators/multiclusterobservability/controllers/placementrule/placementrule_controller.go
@@ -62,6 +62,7 @@ var (
 	defaultAddonDeploymentConfig  = &addonv1alpha1.AddOnDeploymentConfig{}
 	isplacementControllerRunnning = false
 	managedClusterList            = sync.Map{}
+	managedClusterListMutex       = &sync.RWMutex{}
 	installMetricsWithoutAddon    = false
 )
 
@@ -386,6 +387,7 @@ func createAllRelatedRes(
 	}
 
 	failedCreateManagedClusterRes := false
+	managedClusterListMutex.RLock()
 	managedClusterList.Range(func(key, value interface{}) bool {
 		managedCluster := key.(string)
 		openshiftVersion := value.(string)
@@ -444,6 +446,8 @@ func createAllRelatedRes(
 		}
 	}
 
+	managedClusterListMutex.RUnlock()
+
 	failedDeleteOba := false
 	for _, cluster := range clustersToCleanup {
 		err = deleteObsAddon(c, cluster)
@@ -606,8 +610,8 @@ func areManagedClusterLabelsReady(obj client.Object) bool {
 }
 
 func updateManagedClusterList(obj client.Object) {
-	//ACM 8509: Special case for local-cluster, we deploy endpoint and metrics collector in the hub
-	//whether hubSelfManagement is enabled or not
+	managedClusterListMutex.Lock()
+	defer managedClusterListMutex.Unlock()
 	if version, ok := obj.GetLabels()["openshiftVersion"]; ok {
 		managedClusterList.Store(obj.GetName(), version)
 	} else {
diff --git a/operators/multiclusterobservability/controllers/placementrule/predicate_func.go b/operators/multiclusterobservability/controllers/placementrule/predicate_func.go
index 61027c878..265be9b59 100644
--- a/operators/multiclusterobservability/controllers/placementrule/predicate_func.go
+++ b/operators/multiclusterobservability/controllers/placementrule/predicate_func.go
@@ -9,8 +9,6 @@ import (
 	"reflect"
 	"strings"
 
-	clusterv1 "open-cluster-management.io/api/cluster/v1"
-
 	"github.com/stolostron/multicluster-observability-operator/operators/multiclusterobservability/pkg/config"
 	operatorconfig "github.com/stolostron/multicluster-observability-operator/operators/pkg/config"
 
@@ -33,6 +31,8 @@ func getClusterPreds() predicate.Funcs {
 		if !areManagedClusterLabelsReady(e.Object) {
 			return false
 		}
+		//ACM 8509: Special case for local-cluster, we deploy endpoint and metrics collector in the hub
+		//whether hubSelfManagement is enabled or not
 		if e.Object.GetName() != localClusterName {
 			updateManagedClusterList(e.Object)
 		}
@@ -61,16 +61,13 @@ func getClusterPreds() predicate.Funcs {
 			if !areManagedClusterLabelsReady(e.ObjectNew) {
 				return false
 			}
+			//ACM 8509: Special case for local-cluster, we deploy endpoint and metrics collector in the hub
+			//whether hubSelfManagement is enabled or not
 			if e.ObjectNew.GetName() != localClusterName {
 				updateManagedClusterList(e.ObjectNew)
 			}
 
 		}
-		//log the diff in managedccluster object
-		if !reflect.DeepEqual(e.ObjectNew.(*clusterv1.ManagedCluster), e.ObjectOld.(*clusterv1.ManagedCluster)) {
-			log.Info("managedcluster object New diff", "managedCluster", e.ObjectNew.GetName(), "diff", fmt.Sprintf("%+v", e.ObjectNew.(*clusterv1.ManagedCluster)))
-			log.Info("managedcluster object Old diff", "managedCluster", e.ObjectOld.GetName(), "diff", fmt.Sprintf("%+v", e.ObjectOld.(*clusterv1.ManagedCluster)))
-		}
 
 		return true
 	}
@@ -82,6 +79,8 @@ func getClusterPreds() predicate.Funcs {
 			return false
 		}
 
+		//ACM 8509: Special case for local-cluster, we deploy endpoint and metrics collector in the hub
+		//whether hubSelfManagement is enabled or not
 		if e.Object.GetName() != localClusterName {
 			managedClusterList.Delete(e.Object.GetName())
 		}