Merge pull request#2679, consumer throws RpcException when RegistryDi…

…rectory notify in high QPS.

Fixes apache#2016

dubbo-rpc/dubbo-rpc-api/src/main/java/org/apache/dubbo/rpc/protocol/AbstractInvoker.java

@@ -126,10 +126,10 @@ public String toString() {
 
     @Override
     public Result invoke(Invocation inv) throws RpcException {
+        // if invoker is destroyed due to address refresh from registry, let's allow the current invoke to proceed
         if (destroyed.get()) {
-            throw new RpcException("Rpc invoker for service " + this + " on consumer " + NetUtils.getLocalHost()
-                    + " use dubbo version " + Version.getVersion()
-                    + " is DESTROYED, can not be invoked any more!");
+            logger.warn("Invoker for service " + this + " on consumer " + NetUtils.getLocalHost() + " is destroyed, "
+                    + ", dubbo version is " + Version.getVersion() + ", this invoker should not be used any longer");
         }
         RpcInvocation invocation = (RpcInvocation) inv;
         invocation.setInvoker(this);