Marton Greber has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/24096 )

Change subject: KUDU-3692 Export entity attributes as Prometheus labels
......................................................................


Patch Set 2: Code-Review+1

(3 comments)

Overall I think the patch is in a good state, some nits and a suggestion about 
the flags default value.
Thank you!

http://gerrit.cloudera.org:8080/#/c/24096/2/src/kudu/util/metrics.cc
File src/kudu/util/metrics.cc:

http://gerrit.cloudera.org:8080/#/c/24096/2/src/kudu/util/metrics.cc@42
PS2, Line 42: true
For now I think we should set this to default false. This way on upgrade, users 
existing setup could break 'out of the blue'.
On a later release we can change this to be the default with migration steps.
What do you think?


http://gerrit.cloudera.org:8080/#/c/24096/2/src/kudu/util/prometheus_writer.h
File src/kudu/util/prometheus_writer.h:

http://gerrit.cloudera.org:8080/#/c/24096/2/src/kudu/util/prometheus_writer.h@62
PS2, Line 62:    if (!labels.empty() && labels.back() == ',') {
nit: !labels.empty() is redundant here as above we already have early return.


http://gerrit.cloudera.org:8080/#/c/24096/2/src/kudu/util/test_util.cc
File src/kudu/util/test_util.cc:

http://gerrit.cloudera.org:8080/#/c/24096/2/src/kudu/util/test_util.cc@747
PS2, Line 747:   // Every HELP should have a corresponding TYPE and vice versa.
The part verifies that every value line has a HELP entry, but not that HELP 
precedes the value in the output. It could technically pass even if HELP 
appeared after the value.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I690918d06f19c393369b8fc43c3ec90dd2231d3d
Gerrit-Change-Number: 24096
Gerrit-PatchSet: 2
Gerrit-Owner: Yan-Daojiang <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Marton Greber <[email protected]>
Gerrit-Reviewer: Yan-Daojiang <[email protected]>
Gerrit-Comment-Date: Wed, 18 Mar 2026 11:46:04 +0000
Gerrit-HasComments: Yes

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