[12_6_X] RPCDqmClient crash fix for 0 LS runs

[pmandrik]

PR description:

see #39630

[cmsbuild]

@pmandrik, CMSSW_12_6_X branch is closed for direct updates. cms-bot is going to move this PR to master branch.
In future, please use cmssw master branch to submit your changes.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-39633/32431

• This PR adds an extra 16KB to repository

[cmsbuild]

A new Pull Request was created by @pmandrik (Petr Mandrik) for master.

It involves the following packages:

• DQM/RPCMonitorClient (dqm)

@emanueleusai, @ahmad3213, @cmsbuild, @jfernan2, @syuvivida, @pmandrik, @micsucmed, @rvenditti can you please review it and eventually sign? Thanks.
@acimmino this is something you requested to watch as well.
@perrotta, @dpiparo, @rappoccio you are the release manager for this.

cms-bot commands are listed here

[rappoccio]

please test

[rappoccio]

please abort

[rappoccio]

Need resources for higher priority PRs

[emanueleusai]

@pmandrik can you please remove "[12_6_X]" from the PR title

[emanueleusai]

@rappoccio can you please let us know when it is appropriate to restart the tests for this and the other DQM PRs?

[perrotta]

please test
(@emanueleusai thank you for asking: we can do it even now: the outage was yesterday)

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-40bc1e/28090/summary.html
COMMIT: ac555f0
CMSSW: CMSSW_12_6_X_2022-10-06-2300/el8_amd64_gcc10
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/39633/28090/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

@slava77 comparisons for the following workflows were not done due to missing matrix map:

• /data/cmsbld/jenkins/workspace/compare-root-files-short-matrix/data/PR-40bc1e/41834.0_TTbar_14TeV+2026D94+TTbar_14TeV_TuneCP5_GenSimHLBeamSpot14+DigiTrigger+RecoGlobal+HARVESTGlobal

Summary:

• No significant changes to the logs found
• Reco comparison results: 10 differences found in the comparisons
• DQMHistoTests: Total files compared: 49
• DQMHistoTests: Total histograms compared: 3391103
• DQMHistoTests: Total failures: 12
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3391069
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 48 files compared)
• Checked 204 log files, 49 edm output root files, 49 DQM output files
• TriggerResults: no differences found

[emanueleusai]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @perrotta, @dpiparo, @rappoccio (and backports should be raised in the release meeting by the corresponding L2)

[perrotta]

+1