Fix MonitorElement exception in L1TTau offline DQM. - 92x

[thomreis]

backport of #20156

[cmsbuild]

A new Pull Request was created by @thomreis (Thomas Reis) for CMSSW_9_2_X.

It involves the following packages:

DQMOffline/L1Trigger

@vazzolini, @kmaeshima, @dmitrijus, @cmsbuild, @rekovic, @vanbesien, @mulhearn can you please review it and eventually sign? Thanks.
@kreczko, @rociovilar this is something you requested to watch as well.
@davidlange6, @slava77 you are the release manager for this.

cms-bot commands are listed here

• Backported from Fix MonitorElement exception in L1TTau offline DQM. #20156

[rekovic]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/22280/console Started: 2017/08/14 14:55

[cmsbuild]

+1
Tested at: 149370b
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-20157/22280/summary.html

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
69bf76d
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-20157/22280/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-20157/22280/git-merge-result

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-20157/22280/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 22
• DQMHistoTests: Total histograms compared: 1792872
• DQMHistoTests: Total failures: 15037
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 1777669
• DQMHistoTests: Total skipped: 166
• DQMHistoTests: Total Missing objects: 0
• Checked 90 log files, 14 edm output root files, 22 DQM output files

[rekovic]

@thomreis
Originally merged Tau DQM Offline PR (#20043) been reverted in 92x, by a recent PR #20168

@davidlange6
I imagine that you would like a combo fixed version PR, i.e original PR + this PR, showing that it
passes the previously observed crashes.

[thomreis]

@rekovic yes I saw it in 9_2_9_patch1. Now this PR has a conflict. What best to do about this?

[thomreis]

Superseded by #20174