[AARCH64] Unit test DQM/HLTEvF/testTriggerMonitors fails with FileOpenError

[iarspider]

Log file: link

Error message:

%MSG
----- Begin Fatal Exception 01-Mar-2023 03:54:42 CET-----------------------
An exception of category 'FileOpenError' occurred while
   [0] Calling InputSource::readFile_
   [1] Opening DQM Root file
Exception Message:

Input file file:DQMIO.root was not found, could not be opened, or is corrupted.
   Additional Info:
      [a] Fatal Root Error: @SUB=TStorageFactoryFile::Init
file DQMIO.root probably not closed, trying to recover

----- End Fatal Exception -------------------------------------------------

Failure running testTriggerMonitors_harvesting_cfg.py: status 84

---> test testTriggerMonitors had ERRORS

[iarspider]

assign dqm

[cmsbuild]

New categories assigned: dqm

@micsucmed,@rvenditti,@emanueleusai,@syuvivida,@pmandrik you have been requested to review this Pull request/Issue and eventually sign? Thanks

[cmsbuild]

A new Issue was created by @iarspider .

@Dr15Jones, @perrotta, @dpiparo, @rappoccio, @makortel, @smuzaffar can you please review it and eventually sign/assign? Thanks.

cms-bot commands are listed here

[Dr15Jones]

@iarspider @smuzaffar
It looks like several tests write a file named DQMIO.root. When running the tests, where do these files actually appear? It is possible that another tests was in the process of writing a DQMIO.root file while the test that failed is trying to read it.

[smuzaffar]

@Dr15Jones , by default all the files are generated in top level CMSSW_BASE directory ( unless unit test creates it own sub directory). There is good chance that multiple tests might be writing same output file and as arm nodes has a lot of CPUs so there is more chance of hit such issues for aarch64

[Dr15Jones]

The test DQMOffline/Trigger/test/testHLTFiltersDQMonitor_cfg.py also writes a DQMIO.root file.

[smuzaffar]

I am running now all the unit tests (in serial mode) to see what type of files each test generate :-)

[missirol]

The test DQMOffline/Trigger/test/testHLTFiltersDQMonitor_cfg.py also writes a DQMIO.root file.

I think that's caused by some unit tests I introduced (#40334, #40426), my bad. I tried to fix this in #40928. Thanks for finding the issue, @Dr15Jones.

[perrotta]

@iarspider I think this issue can get closed now: isn't it?

[iarspider]

@perrotta I agree.