carryxyh commented on a change in pull request #2024: Binding attachment before 
a clusterInvoker invoke.
URL: https://github.com/apache/incubator-dubbo/pull/2024#discussion_r202256311
 
 

 ##########
 File path: 
dubbo-cluster/src/test/java/com/alibaba/dubbo/rpc/cluster/support/ForkingClusterInvokerTest.java
 ##########
 @@ -120,8 +122,32 @@ public void testInvokeExceptoin() {
         }
     }
 
+    @Test
+    public void testClearRpcContext() {
+        resetInvokerToException();
+        ForkingClusterInvoker<ForkingClusterInvokerTest> invoker = new 
ForkingClusterInvoker<ForkingClusterInvokerTest>(
+                dic);
+
+        String attachKey = "attach";
+        String attachValue = "value";
+
+        RpcContext.getContext().setAttachment(attachKey, attachValue);
+
+        Map<String, String> attachments = 
RpcContext.getContext().getAttachments();
+        Assert.assertTrue("set attachment failed!", attachments != null && 
attachments.size() == 1);
+        try {
+            invoker.invoke(invocation);
+            Assert.fail();
+        } catch (RpcException expected) {
+            Assert.assertTrue(expected.getMessage().contains("Failed to 
forking invoke provider"));
+            assertFalse(expected.getCause() instanceof RpcException);
 
 Review comment:
   Ok, will fix it soon.
   Change junit.framework.Assert to org.junit.Assert.

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