wuchenxi123 commented on a change in pull request #11112:
URL: https://github.com/apache/pulsar/pull/11112#discussion_r659875261



##########
File path: 
pulsar-functions/instance/src/main/java/org/apache/pulsar/functions/instance/JavaInstance.java
##########
@@ -74,6 +75,24 @@ public JavaInstance(ContextImpl contextImpl, Object 
userClassObject, InstanceCon
         }
     }
 
+    public void setup() {
+        if (null != function && function instanceof Hook) {
+            try {
+                ((Hook) function).preProcess(context);
+            } catch (RuntimeException e) {
+                log.error("setup error:", e);
+                throw new RuntimeException("function preProcess occurred 
exception", e);
+            }
+        }
+        if (null != javaUtilFunction && javaUtilFunction instanceof Hook) {

Review comment:
       I have corrected it




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