Make Worker only if module uses the transition - #51634

please test

cms-bot internal usage

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-51634/50469

• There are other open Pull requests which might conflict with changes you have proposed:
  • File FWCore/Framework/src/Schedule.cc modified in PR(s): Improve how some ActivityRegistry signals are emitted #51625

A new Pull Request was created by @Dr15Jones for master.

It involves the following packages:

• FWCore/Framework (core)

@Dr15Jones, @makortel, @smuzaffar can you please review it and eventually sign? Thanks.
@makortel, @wddgit this is something you requested to watch as well.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

+1

Size: This PR adds an extra 52KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-c34822/55109/summary.html
COMMIT: c3a08d2
CMSSW: CMSSW_20_1_X_2026-08-05-1100/el9_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/51634/55109/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @felicepantaleo Enable the MC-truth graph with configurable event-content levels #51562
• @EmanueleCoradin Patch: Remove hltPhase2PixelVertices from DST_HeterogeneousReco #51627

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-c34822/55109/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-c34822/55109/git-merge-result

Comparison Summary

Summary:

• You potentially added 62 lines to the logs
• ROOTFileChecks: Some differences in event products or their sizes found
• Reco comparison results: 56 differences found in the comparisons
• DQMHistoTests: Total files compared: 45
• DQMHistoTests: Total histograms compared: 3588770
• DQMHistoTests: Total failures: 18959
• DQMHistoTests: Total nulls: 3
• DQMHistoTests: Total successes: 3569790
• DQMHistoTests: Total skipped: 18
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 92.735 KiB( 44 files compared)
• DQMHistoSizes: changed ( 34434.0,... ): 15.791 KiB HGCAL/BranchValidator
• DQMHistoSizes: changed ( 34434.0,... ): 2.732 KiB Tracking/BranchValidator
• DQMHistoSizes: changed ( 34434.0,... ): 0.012 KiB MessageLogger/Errors
• DQMHistoSizes: changed ( 34434.0,... ): 0.012 KiB MessageLogger/Warnings
• Checked 195 log files, 163 edm output root files, 45 DQM output files
• TriggerResults: found differences in 5 / 44 workflows

Max Memory Comparisons exceeding threshold

@cms-sw/core-l2 , I found 6 workflow step(s) with memory usage exceeding the error threshold:

Changes look fine, but I'd like to run the tests again in the next IB to have clean comparisons

@cmsbuild, please test

+1

Size: This PR adds an extra 16KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-c34822/55134/summary.html
COMMIT: c3a08d2
CMSSW: CMSSW_20_1_X_2026-08-06-1100/el9_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/51634/55134/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially removed 2 lines from the logs
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 45
• DQMHistoTests: Total histograms compared: 3589140
• DQMHistoTests: Total failures: 50
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3589072
• DQMHistoTests: Total skipped: 18
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 44 files compared)
• Checked 195 log files, 163 edm output root files, 45 DQM output files
• TriggerResults: no differences found

Comparison differences are related to #47071 and #51594

+core

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. @ftenchini, @sextonkennedy, @mandrenguyen (and backports should be raised in the release meeting by the corresponding L2)

+1