Hello Alexey Serbin, Kudu Jenkins, Todd Lipcon,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/9627
to look at the new patch set (#2).
Change subject: WIP: KUDU-2342. consensus: use tighter bound for non-voter
promotion
......................................................................
WIP: KUDU-2342. consensus: use tighter bound for non-voter promotion
This patch replaces the NON_VOTER promotion heuristic based on the
--consensus_promotion_max_wal_entries_behind gflag with a heuristic that
roughly matches the promotion criteria outlined in Diego Ongaro's
dissertation.
The approach is that we track the operation count of the last batch
successfully sent from leader to peer. If the peer is within that number
of ops of the commit index, the peer is eligible for promotion.
The aforementioned gflag has been removed.
TODO: Needs tests (passes existing tests).
Change-Id: Iff517f01d6dc25eb15d01593dd57b7dc0dd25956
---
M src/kudu/consensus/consensus_queue.cc
1 file changed, 21 insertions(+), 14 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/27/9627/2
--
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Iff517f01d6dc25eb15d01593dd57b7dc0dd25956
Gerrit-Change-Number: 9627
Gerrit-PatchSet: 2
Gerrit-Owner: Mike Percy <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <[email protected]>
Gerrit-Reviewer: Todd Lipcon <[email protected]>
