Alexey Serbin has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/14922 )

Change subject: [metrics] Add a flag to set a default metric level
......................................................................

[metrics] Add a flag to set a default metric level

This patch adds the `metrics_default_level` flag, set to the lowest level
by default. The flag defines the default severity level to use when
filtering the metrics in the '/metrics' endpoint.

I am adding this flag to better support existing monitoring deployments
using the plain/parameterless URL when collecting metrics. Even
though the metric level can be filtered by using the URL query
parameters, existing deployments may not support configuring or
adjusting that URL.

Change-Id: I296fda7a6fefb952f1522bba3c1ff9804d5ce5cc
Reviewed-on: http://gerrit.cloudera.org:8080/14922
Tested-by: Kudu Jenkins
Reviewed-by: Adar Dembo <[email protected]>
---
M src/kudu/server/default_path_handlers.cc
1 file changed, 22 insertions(+), 1 deletion(-)

Approvals:
  Kudu Jenkins: Verified
  Adar Dembo: Looks good to me, approved

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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I296fda7a6fefb952f1522bba3c1ff9804d5ce5cc
Gerrit-Change-Number: 14922
Gerrit-PatchSet: 3
Gerrit-Owner: Grant Henke <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Grant Henke <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)

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