GitHub user cjjnjust reopened a pull request:

    https://github.com/apache/spark/pull/15172

    [Spark-13331][network] Spark RPC encryption optimization

    ## What changes were proposed in this pull request?
    
    DIGEST-MD5 mechanism is used for SASL authentication and secure 
communication. DIGEST-MD5 mechanism supports 3DES, DES, and RC4 ciphers. 
However, 3DES, DES and RC4 are slow relatively.
    
    AES provide better performance and security by design and is a replacement 
for 3DES according to NIST. Apache Common Crypto is a cryptographic library 
optimized with AES-NI, this patch employ Apache Common Crypto as enc/dec 
backend for SASL authentication and secure channel to improve spark RPC.
    
    ## How was this patch tested?
    
    Unit tests and Integration test.
    
    
    
    


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/cjjnjust/spark shuffle_rpc_encrypt

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/15172.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #15172
    
----
commit 78f4d7bcfb5830fa54b1380182f08a85fee97d92
Author: Junjie Chen <junjie.j.c...@intel.com>
Date:   2016-09-20T17:57:05Z

    [Spark-13331] Spark RPC encryption optimization
    
    DIGEST-MD5 mechanism is used for SASL authentication and secure 
communication. DIGEST-MD5 mechanism supports 3DES, DES, and RC4 ciphers. 
However, 3DES, DES and RC4 are slow relatively.
    
    AES provide better performance and security by design and is a replacement 
for 3DES according to NIST. Apache Common Crypto is a cryptographic library 
optimized with AES-NI, this patch employ Apache Common Crypto as enc/dec 
backend for SASL authentication and secure channel to improve spark RPC.

----


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