From 5c273ea08556dd36d4a128cb69e3b5cb45b9b9c7 Mon Sep 17 00:00:00 2001
From: "ken.lj" <ken.lj.hz@gmail.com>
Date: Thu, 23 May 2019 17:25:16 +0800
Subject: [PATCH] add miss-deleted snippet from #2956

---
 .../java/org/apache/dubbo/rpc/AppResponse.java | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/dubbo-rpc/dubbo-rpc-api/src/main/java/org/apache/dubbo/rpc/AppResponse.java b/dubbo-rpc/dubbo-rpc-api/src/main/java/org/apache/dubbo/rpc/AppResponse.java
index 16e938095a58..6657b79b4071 100644
--- a/dubbo-rpc/dubbo-rpc-api/src/main/java/org/apache/dubbo/rpc/AppResponse.java
+++ b/dubbo-rpc/dubbo-rpc-api/src/main/java/org/apache/dubbo/rpc/AppResponse.java
@@ -17,6 +17,7 @@
 package org.apache.dubbo.rpc;
 
 import java.io.Serializable;
+import java.lang.reflect.Field;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.function.Function;
@@ -64,6 +65,23 @@ public AppResponse(Throwable exception) {
     @Override
     public Object recreate() throws Throwable {
         if (exception != null) {
+            // fix issue#619
+            try {
+                // get Throwable class
+                Class clazz = exception.getClass();
+                while (!clazz.getName().equals(Throwable.class.getName())) {
+                    clazz = clazz.getSuperclass();
+                }
+                // get stackTrace value
+                Field stackTraceField = clazz.getDeclaredField("stackTrace");
+                stackTraceField.setAccessible(true);
+                Object stackTrace = stackTraceField.get(exception);
+                if (stackTrace == null) {
+                    exception.setStackTrace(new StackTraceElement[0]);
+                }
+            } catch (Exception e) {
+                // ignore
+            }
             throw exception;
         }
         return result;