From 26c6767c36bcf907d6cf0943368dea59c4b2cce1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BA=8E=E7=8E=89=E6=A1=94?= <769213327@qq.com>
Date: Mon, 29 Jul 2019 14:43:49 +0800
Subject: [PATCH] fix-3155 (#3186)

---
 apm-sniffer/apm-agent/pom.xml                                 | 4 ++++
 .../java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java | 1 +
 2 files changed, 5 insertions(+)

diff --git a/apm-sniffer/apm-agent/pom.xml b/apm-sniffer/apm-agent/pom.xml
index 64d51bd078..897ea6d265 100644
--- a/apm-sniffer/apm-agent/pom.xml
+++ b/apm-sniffer/apm-agent/pom.xml
@@ -35,6 +35,8 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <premain.class>org.apache.skywalking.apm.agent.SkyWalkingAgent</premain.class>
+        <can.redefine.classes>true</can.redefine.classes>
+        <can.retransform.classes>true</can.retransform.classes>
         <shade.net.bytebuddy.source>net.bytebuddy</shade.net.bytebuddy.source>
         <shade.net.bytebuddy.target>${shade.package}.${shade.net.bytebuddy.source}</shade.net.bytebuddy.target>
     </properties>
@@ -69,6 +71,8 @@
                                     implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                     <manifestEntries>
                                         <Premain-Class>${premain.class}</Premain-Class>
+                                        <Can-Redefine-Classes>${can.redefine.classes}</Can-Redefine-Classes>
+                                        <Can-Retransform-Classes>${can.retransform.classes}</Can-Retransform-Classes>
                                     </manifestEntries>
                                 </transformer>
                             </transformers>
diff --git a/apm-sniffer/apm-agent/src/main/java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java b/apm-sniffer/apm-agent/src/main/java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java
index 8b02e86cb8..8f5b439dda 100644
--- a/apm-sniffer/apm-agent/src/main/java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java
+++ b/apm-sniffer/apm-agent/src/main/java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java
@@ -107,6 +107,7 @@ public class SkyWalkingAgent {
         agentBuilder
             .type(pluginFinder.buildMatch())
             .transform(new Transformer(pluginFinder))
+            .with(AgentBuilder.RedefinitionStrategy.RETRANSFORMATION)
             .with(new Listener())
             .installOn(instrumentation);
 
-- 
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