diff --git a/pulsar-config-validation/src/main/java/org/apache/pulsar/config/validation/ValidatorImpls.java b/pulsar-config-validation/src/main/java/org/apache/pulsar/config/validation/ValidatorImpls.java
index 23cb924f17e18..1cf53009b3dfb 100644
--- a/pulsar-config-validation/src/main/java/org/apache/pulsar/config/validation/ValidatorImpls.java
+++ b/pulsar-config-validation/src/main/java/org/apache/pulsar/config/validation/ValidatorImpls.java
@@ -204,7 +204,7 @@ public void validateField(String name, Object o) {
             if (count == 0) {
                 throw new IllegalArgumentException(
                         String.format("Field '%s' with value '%s' does not implement any of these classes %s",
-                                name, o, classesImplements));
+                                name, o, Arrays.toString(classesImplements)));
             }
         }
     }
diff --git a/pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/FunctionRuntimeManager.java b/pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/FunctionRuntimeManager.java
index e074323bc970f..eaad1320d7ce8 100644
--- a/pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/FunctionRuntimeManager.java
+++ b/pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/FunctionRuntimeManager.java
@@ -944,6 +944,7 @@ private boolean needsStart(Assignment assignment) {
                 for (Function.FunctionState state : functionMetaData.getInstanceStatesMap().values()) {
                     if (state == Function.FunctionState.RUNNING) {
                         toStart = true;
+                        break;
                     }
                 }
             } else {