Github user cjjnjust commented on a diff in the pull request:

    https://github.com/apache/spark/pull/15172#discussion_r87328090
  
    --- Diff: 
common/network-common/src/main/java/org/apache/spark/network/sasl/SaslClientBootstrap.java
 ---
    @@ -88,9 +90,26 @@ public void doBootstrap(TransportClient client, Channel 
channel) {
               throw new RuntimeException(
                 new SaslException("Encryption requests by negotiated 
non-encrypted connection."));
             }
    -        SaslEncryption.addToChannel(channel, saslClient, 
conf.maxSaslEncryptedBlockSize());
    +
    +        if (conf.aesEncryptionEnabled()) {
    +          // Generate a request config message to send to server.
    +          AesConfigMessage configMessage = 
AesCipher.createConfigMessage(conf);
    +          ByteBuffer buf = configMessage.encodeMessage();
    +
    +          // Encrypted the config message.
    +          ByteBuffer encrypted = ByteBuffer.wrap(
    +            saslClient.wrap(buf.array(), 0, buf.array().length));
    --- End diff --
    
    Really thanks:)


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