[kudu-CR] [metrics] Merge metrics by the same attribute

["Yingchun Lai (Code Review)" <ge...@cloudera.org>]

Hello Tidy Bot, Kudu Jenkins, Andrew Wong, Adar Dembo, 

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

    http://gerrit.cloudera.org:8080/13580

to look at the new patch set (#4).

Change subject: [metrics] Merge metrics by the same attribute
......................................................................

[metrics] Merge metrics by the same attribute

This patch merge metrics together which have the same value of some attribute,
which will reduce the total data size received by any thirdparty monitor systems
if they do not care about the original metrics details.

Change-Id: I8db3d082ae847eb1d83b9e4aee57d5e4bf13e1b5
---
M src/kudu/server/default_path_handlers.cc
M src/kudu/util/hdr_histogram-test.cc
M src/kudu/util/hdr_histogram.cc
M src/kudu/util/hdr_histogram.h
M src/kudu/util/metrics-test.cc
M src/kudu/util/metrics.cc
M src/kudu/util/metrics.h
7 files changed, 791 insertions(+), 109 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/80/13580/4
-- 
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I8db3d082ae847eb1d83b9e4aee57d5e4bf13e1b5
Gerrit-Change-Number: 13580
Gerrit-PatchSet: 4
Gerrit-Owner: Yingchun Lai <40...@qq.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Yingchun Lai <40...@qq.com>