wrong behaviour in makeTrackValidationPlots.py

[lguzzi]

I spotted a possible bug affecting makeTrackValidationPlots.py when printing to disk validation plots of HLT track collections.

To reproduce the bug:

cmsDriver.py DQM                                \
  --step VALIDATION:hltMultiTrackValidation     \
  --conditions 140X_mcRun4_realistic_v4         \
  --datatier DQMIO                              \
  --era Phase2C17I13M9                          \
  --eventcontent DQM                            \
  --filein file:/eos/cms/store/mc/Phase2Spring24DIGIRECOMiniAOD/DYToLL_M-10To50_TuneCP5_14TeV-pythia8/GEN-SIM-DIGI-RAW-MINIAOD/PU200ALCA_pilot_140X_mcRun4_realistic_v4-v1/130000/ab6e271f-1c82-49c2-b015-608d9f26eb0d.root \
  --fileout "file:DQM.root"                     \
  --geometry Extended2026D110                   \
  --nThreads 5                                  \
  --number 5

cmsDriver.py HARVEST                                \
  --step HARVESTING:@trackingOnlyValidation+@trackingOnlyDQM+postProcessorHLTtrackingSequence \
  --filein file:DQM.root                            \
  --scenario pp                                     \
  --filetype DQM                                    \
  --conditions 140X_mcRun4_realistic_v4             \
  --mc

makeTrackValidationPlots.py DQM_V0001_R000000001__Global__CMSSW_X_Y_Z__RECO.root -o plots

I would expect the script to plot the content of the following TDirectories

DQMData/Run 1/HLT/Run summary/Tracking/ValidationWRTtp/hltPhase2Pixel_hltAssociatorByHits
DQMData/Run 1/HLT/Run summary/Tracking/ValidationWRTtp/HLT_general_hltAssociatorByHits
DQMData/Run 1/HLT/Run summary/Tracking/ValidationWRTtp/simulation

instead, only hltPhase2Pixel_hltAssociatorByHits is plotted. This is due to

cmssw/Validation/RecoTrack/python/plotting/trackingPlots.py

Lines 906 to 907 in 5b527ae

	if len(spl) != 2:
	return None

Removing these lines produces the expected behaviour.

[cmsbuild]

cms-bot internal usage

[cmsbuild]

A new Issue was created by @lguzzi.

@Dr15Jones, @antoniovilela, @makortel, @mandrenguyen, @rappoccio, @sextonkennedy, @smuzaffar can you please review it and eventually sign/assign? Thanks.

cms-bot commands are listed here

[makortel]

assign dqm

FYI @cms-sw/tracking-pog-l2

[cmsbuild]

New categories assigned: dqm

@rvenditti,@syuvivida,@tjavaid,@nothingface0,@antoniovagnerini you have been requested to review this Pull request/Issue and eventually sign? Thanks