RexXiong commented on code in PR #3149:
URL: https://github.com/apache/celeborn/pull/3149#discussion_r1994951793


##########
master/src/main/scala/org/apache/celeborn/service/deploy/master/Master.scala:
##########
@@ -320,6 +324,13 @@ private[celeborn] class Master(
         "send-application-meta")
     }
 
+    runTransportMessagesStaticBlockerTask = runTransportMessagesThread.submit(

Review Comment:
   Maybe we can use a TransportMessagesHelper to handle pre-register. Besides 
this,is pre-register really needed For LifecycleManager/Master/Worker?



##########
client/src/main/java/org/apache/celeborn/client/ShuffleClient.java:
##########
@@ -63,7 +70,16 @@ public static void reset() {
     hadoopFs = null;
   }
 
-  protected ShuffleClient() {}
+  protected ShuffleClient() {
+    transportMessagesRunner =
+        
ThreadUtils.newDaemonSingleThreadExecutor("client-transport-messages-runner");
+    runTransportMessagesStaticBlockerTask =
+        transportMessagesRunner.submit(

Review Comment:
   why should register all extensions for every shuffleClient?



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