WF 34551.85 step2 (which I believe is heavy ion) has a new failure in the CMSSW_20_1_X_2026-08-05-2300 IBs:
----- Begin Fatal Exception 06-Aug-2026 02:48:31 CEST-----------------------
An exception of category 'FatalRootError' occurred while
[0] Processing Event run: 1 lumi: 53 event: 53 stream: 1
[1] Running path 'FEVTDEBUGHLToutput_step'
[2] Calling method for module PoolOutputModule/'FEVTDEBUGHLToutput'
Additional Info:
[a] Fatal Root Error: @SUB=TBufferFile::WriteByteCount
bytecount too large (more than 1073741822)
----- End Fatal Exception -------------------------------------------------
It appears in all variants, so is highly repeatable. New PRs in that IB are #51627, #51563, and #51562. #51562 "Enable the MC-truth graph with configurable event-content levels" seems like the most likely to have changed the output record size.
WF 34551.85 step2 (which I believe is heavy ion) has a new failure in the CMSSW_20_1_X_2026-08-05-2300 IBs:
It appears in all variants, so is highly repeatable. New PRs in that IB are #51627, #51563, and #51562. #51562 "Enable the MC-truth graph with configurable event-content levels" seems like the most likely to have changed the output record size.