otterc commented on code in PR #2346:
URL: 
https://github.com/apache/incubator-celeborn/pull/2346#discussion_r1512106907


##########
master/src/main/scala/org/apache/celeborn/service/deploy/master/Master.scala:
##########
@@ -850,6 +852,22 @@ private[celeborn] class Master(
       logInfo(s"Offered extra $offerSlotsExtraSize slots for $shuffleKey")
     }
 
+    if (authEnabled) {
+      // Pass application registration information to the workers
+      val pbApplicationMeta = PbApplicationMeta.newBuilder()
+        .setAppId(requestSlots.applicationId)
+        .setSecret(secretRegistry.getSecretKey(requestSlots.applicationId))
+        .build()
+      val transportMessage =
+        new TransportMessage(MessageType.APPLICATION_META, 
pbApplicationMeta.toByteArray)
+
+      slots.keySet().asScala.foreach { worker =>
+        logDebug(s"Sending app registration info to 
${worker.host}:${worker.internalPort}")
+        internalRpcEnvInUse.setupEndpointRef(
+          RpcAddress.apply(worker.host, worker.internalPort),
+          RpcNameConstants.WORKER_INTERNAL_EP).send(transportMessage)

Review Comment:
   Made the change. PTAL.



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