aajisaka commented on a change in pull request #3677:
URL: https://github.com/apache/hadoop/pull/3677#discussion_r757265244



##########
File path: 
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/datatransfer/sasl/SaslDataTransferClient.java
##########
@@ -603,7 +603,17 @@ private IOStreamPair doSaslHandshake(InetAddress addr,
           conf, cipherOption, underlyingOut, underlyingIn, false) :
           sasl.createStreamPair(out, in);
     } catch (IOException ioe) {
-      sendGenericSaslErrorMessage(out, ioe.getMessage());
+      try {

Review comment:
       Thank you for your information and additional fix! Can we create a flag 
to add `Thread.sleep` and add a unit test with the flag enabled?




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