Hello Alexey Serbin, Kudu Jenkins, Andrew Wong, Todd Lipcon,

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/9378

to look at the new patch set (#3).

Change subject: KUDU-2309: /masters can show the wrong list of masters
......................................................................

KUDU-2309: /masters can show the wrong list of masters

The ListMasters RPC (on which the /masters page is based) returned
masters based on the -master_addresses flag. It should return masters
based on the consensus configuration. Since we verify the two sets of
addresses are the same at startup, this usually makes no difference.
However, if a master is replaced by a server with a new UUID,
previously we would report the new UUID, even though it may not be
part of the previously established quorum. This patch adds an
additional check that the UUIDs match, and returns an error along with
the registration information if there is a mismatch.

Screenshot for down master: 
https://github.com/wdberkeley/kudu/blob/kudu2309screenshots/www/mastersonedown.png
Screenshot for UUID mismatch: 
https://github.com/wdberkeley/kudu/blob/kudu2309screenshots/www/mastersmismatch.png

Change-Id: I603ebc22e998bac9bd00edc939577ae339587f26
---
M src/kudu/master/master.cc
M src/kudu/master/master_path_handlers.cc
M src/kudu/master/sys_catalog.h
M www/masters.mustache
4 files changed, 47 insertions(+), 26 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/78/9378/3
--
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I603ebc22e998bac9bd00edc939577ae339587f26
Gerrit-Change-Number: 9378
Gerrit-PatchSet: 3
Gerrit-Owner: Will Berkeley <wdberke...@gmail.com>
Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Will Berkeley <wdberke...@gmail.com>

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