Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8861 )

Change subject: IMPALA-6128: Add support for AES-CTR encryption when spilling 
to disk CFB mode is a stream cipher and is secure when used with a different 
nonce/IV for every message. However it can be a performance bottleneck. CTR 
mode is also stream cipher and is secure
......................................................................


Patch Set 4:

We have some internal infra at cloudera that can build Impala on multiple OSes. 
I'll run this patch through that before merging to make sure that it works as 
expected on older versions.


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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I9debc240615dd8cdbf00ec8730cff62ffef52aff
Gerrit-Change-Number: 8861
Gerrit-PatchSet: 4
Gerrit-Owner: Xianda Ke <kexia...@gmail.com>
Gerrit-Reviewer: Bikramjeet Vig <bikramjeet....@cloudera.com>
Gerrit-Reviewer: Sailesh Mukil <sail...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Xianda Ke <kexia...@gmail.com>
Gerrit-Comment-Date: Fri, 05 Jan 2018 16:55:54 +0000
Gerrit-HasComments: No

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