pnowojski commented on a change in pull request #11541: [FLINK-15416][network] 
add task manager netty client retry mechenism
URL: https://github.com/apache/flink/pull/11541#discussion_r400973222
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/PartitionRequestClientFactory.java
 ##########
 @@ -81,14 +92,36 @@ NettyPartitionRequestClient 
createPartitionRequestClient(ConnectionID connection
                                Object old = clients.putIfAbsent(connectionId, 
connectingChannel);
 
                                if (old == null) {
-                                       
nettyClient.connect(connectionId.getAddress()).addListener(connectingChannel);
-
-                                       client = 
connectingChannel.waitForChannel();
-
-                                       clients.replace(connectionId, 
connectingChannel, client);
+                                       int count = 0;
+                                       ChannelException exception = null;
+                                       do {
+                                               try {
+                                                       exception = null;
+                                                       connectingChannel.error 
= null;
 
 Review comment:
   Why don't you create a new `ConnectingChannel(...)`?

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