Hello Tidy Bot, Mike Percy, David Ribeiro Alves, Kudu Jenkins, Todd Lipcon,

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

    http://gerrit.cloudera.org:8080/9625

to look at the new patch set (#5).

Change subject: [consensus] FAILED_UNRECOVERABLE replica health status
......................................................................

[consensus] FAILED_UNRECOVERABLE replica health status

Added HealthStatus::FAILED_UNRECOVERABLE for a tablet replica. This is
to mark replicas which are not able to catch up with the leader due to
GC-collected segments of WAL and other unrecoverable cases.

With the introduction of the FAILED_UNRECOVERABLE health status, the
replica management scheme becomes hybrid: the system evicts replicas
with FAILED_UNRECOVERABLE health status before adding a replacement
if it anticipates that it can commit the transaction.

This patch is a part of the fix to address KUDU-2342.  It also addresses
KUDU-2322 as well: evicting voter replicas more aggressively if they
fall behind log segment GC threshold.

Change-Id: I35637c5bda6681b732dbc2bbf94b9d4258b12095
---
M src/kudu/consensus/consensus_queue.cc
M src/kudu/consensus/metadata.proto
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
5 files changed, 443 insertions(+), 161 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/25/9625/5
--
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I35637c5bda6681b732dbc2bbf94b9d4258b12095
Gerrit-Change-Number: 9625
Gerrit-PatchSet: 5
Gerrit-Owner: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: David Ribeiro Alves <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <[email protected]>
Gerrit-Reviewer: Tidy Bot
Gerrit-Reviewer: Todd Lipcon <[email protected]>

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