Todd Lipcon has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/9398 )

Change subject: java: provide our own preferred cipher suite list
......................................................................

java: provide our own preferred cipher suite list

This updates the Java client to use a cipher suite list which matches
the server side. This has a very big performance benefit since it
prioritizes GCM-based ciphers which are significantly faster than those
that use SHA256 or SHA384 HMAC for integrity.

In particular, a YCSB in-memory random-read workload I was running got
~60% faster. The CPU profile on the server previously showed most of its
time in SHA hash calculation, and now shows only relatively little CPU
in GCM-related calls.

Change-Id: I4b2853dfd8d330bdf003924a5574fde865f54249
Reviewed-on: http://gerrit.cloudera.org:8080/9398
Reviewed-by: Dan Burkert <d...@cloudera.com>
Tested-by: Kudu Jenkins
---
M java/kudu-client/src/main/java/org/apache/kudu/client/Negotiator.java
1 file changed, 39 insertions(+), 0 deletions(-)

Approvals:
  Dan Burkert: Looks good to me, approved
  Kudu Jenkins: Verified

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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I4b2853dfd8d330bdf003924a5574fde865f54249
Gerrit-Change-Number: 9398
Gerrit-PatchSet: 4
Gerrit-Owner: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Dan Burkert <d...@cloudera.com>
Gerrit-Reviewer: Grant Henke <granthe...@gmail.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>

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