Cleanup Thread.isAlive() which has been removed in python 3.9 and avbove

[smuzaffar]

AddOnTests and Relvals failed for Python 3.9 ( DEVEL IBs cms-sw/cmsdist#7111 ) with errors like [a]. Thread.isAlive() has been removed from python 3.9 ( https://bugs.python.org/issue37804 ). This PR replaces isAlive with is_alive as suggested here https://bugs.python.org/issue35283

[a]

  File "/cvmfs/cms-ci.cern.ch/week0/cms-sw/cmsdist/7111/16624/CMSSW_12_0_DEVEL_X_2021-07-07-2300/python/Configuration/PyReleaseValidation/MatrixRunner.py", line 26, in activeThreads
    if t.isAlive() : nActive += 1
AttributeError: 'WorkFlowRunner' object has no attribute 'isAlive'

[smuzaffar]

please test

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-34421/23832

• This PR adds an extra 24KB to repository

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for master.

It involves the following packages:

• Configuration/PyReleaseValidation (pdmv, upgrade)
• DQM/Integration (dqm)
• Utilities/ReleaseScripts (core)

@smuzaffar, @andrius-k, @Dr15Jones, @jordan-martins, @makortel, @kmaeshima, @wajidalikhan, @ErnestaP, @kpedro88, @chayanit, @srimanob, @jfernan2, @ahmad3213, @rvenditti can you please review it and eventually sign? Thanks.
@batinkov, @battibass, @makortel, @wddgit, @Martin-Grunewald, @threus, @fabiocos, @slomeo this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy, @perrotta you are the release manager for this.

cms-bot commands are listed here

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-52a339/16642/summary.html
COMMIT: cc9af5a
CMSSW: CMSSW_12_0_X_2021-07-08-2300/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/34421/16642/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 5077 differences found in the comparisons
• DQMHistoTests: Total files compared: 38
• DQMHistoTests: Total histograms compared: 2786260
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2786237
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 37 files compared)
• Checked 160 log files, 37 edm output root files, 38 DQM output files
• TriggerResults: no differences found

[jfernan2]

+1

[smuzaffar]

+core

[smuzaffar]

@qliphy @silviodonato , can you please merge this so that we can proceed with python 3.9 in devel Ibs

[srimanob]

+Upgrade

[qliphy]

merge

[chayanit]

+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 be automatically merged.