[kudu-CR] [quorum util] update criteria for non-voter replica eviction

["Alexey Serbin (Code Review)" <ge...@cloudera.org>]

Hello Tidy Bot, Mike Percy, Kudu Jenkins, 

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

    http://gerrit.cloudera.org:8080/8679

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

Change subject: [quorum_util] update criteria for non-voter replica eviction
......................................................................

[quorum_util] update criteria for non-voter replica eviction

Updated the non-voter replica eviction criteria to address a scenario
where newly added non-voter replicas fail one after another before the
original failed voter replica is evicted.  This is to make sure the
replacement process does not end up with placing failed non-voter
replicas at every available tablet server, deadlocking the replacement
process.

Added corresponding unit tests to cover the updated behavior of the
consensus::CanEvictReplica() utility function.

Change-Id: I2062c2963fface43062b3154bf5ffa61b4fa684f
---
M src/kudu/consensus/quorum_util-test.cc
M src/kudu/consensus/quorum_util.cc
M src/kudu/integration-tests/raft_consensus_nonvoter-itest.cc
3 files changed, 272 insertions(+), 76 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/79/8679/3
-- 
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I2062c2963fface43062b3154bf5ffa61b4fa684f
Gerrit-Change-Number: 8679
Gerrit-PatchSet: 3
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <mp...@apache.org>
Gerrit-Reviewer: Tidy Bot