Hello Will Berkeley, Mike Percy, Kudu Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/9176
to look at the new patch set (#3).
Change subject: KUDU-2279 (part 2): metrics: only emit changed metrics in
metrics log
......................................................................
KUDU-2279 (part 2): metrics: only emit changed metrics in metrics log
This adds a global 'metrics epoch' which can be externally incremented.
When metrics are modified, they remember the epoch of their most recent
modification.
When we dump metrics, we can pass a lower bound in order to see only
metrics which have been modified in or after a given epoch.
This patch updates the metrics logging to only emit metrics that have
changed in each successive line. This should substantially reduce the
size and CPU cost of metric logging on servers with thousands of
tablets.
Change-Id: Ia26be99a1fa96d52e2ca0905844d56c096d3778e
---
M src/kudu/server/server_base.cc
M src/kudu/util/metrics-test.cc
M src/kudu/util/metrics.cc
M src/kudu/util/metrics.h
4 files changed, 141 insertions(+), 26 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/76/9176/3
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ia26be99a1fa96d52e2ca0905844d56c096d3778e
Gerrit-Change-Number: 9176
Gerrit-PatchSet: 3
Gerrit-Owner: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <mpe...@apache.org>
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Will Berkeley <wdberke...@gmail.com>
