Todd Lipcon has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/9595 )

Change subject: Remove tcmalloc_spinlock_contention metric
......................................................................

Remove tcmalloc_spinlock_contention metric

Spinlock contention was removed from tcmalloc upstream, so this metric
has been set to 0 since we upgraded to tcmalloc 2.6. I looked briefly at
reverting its removal upstream, but the revert would be fairly large, so
I think it's best to just accept the loss of this instrumentation.

Change-Id: I2c29b81a2c692d5d876d2dd5381ba2c295684324
Reviewed-on: http://gerrit.cloudera.org:8080/9595
Tested-by: Todd Lipcon <t...@apache.org>
Reviewed-by: Adar Dembo <a...@cloudera.com>
---
M docs/release_notes.adoc
M src/kudu/scripts/parse_metrics_log.py
M src/kudu/util/spinlock_profiling-test.cc
M src/kudu/util/spinlock_profiling.cc
M src/kudu/util/spinlock_profiling.h
M src/kudu/util/trace.h
M src/kudu/util/trace_metrics.h
7 files changed, 7 insertions(+), 103 deletions(-)

Approvals:
  Todd Lipcon: Verified
  Adar Dembo: Looks good to me, approved

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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I2c29b81a2c692d5d876d2dd5381ba2c295684324
Gerrit-Change-Number: 9595
Gerrit-PatchSet: 2
Gerrit-Owner: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>

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