ConcurrencyViolationError when reading with XRootD

[peremato]

Using the latest UnROOT v0.10.24 and accessing remote files with xrootd I get a crash

ERROR: ERROR: ConcurrencyViolationError("lock must be held")
Stacktrace:
  [1] concurrency_violation()
    @ Base ./condition.jl:8
  [2] assert_havelock(l::ReentrantLock, tid::Nothing)
    @ Base ./condition.jl:25 [inlined]
  [3] assert_havelock(l::ReentrantLock, tid::Nothing)
...

A easy reproducer is:

using UnROOT

f = "root://eospublic.cern.ch//eos/opendata/cms/Run2016G/DoubleMuon/NANOAOD/UL2016_MiniAODv2_NanoAODv9-v2/2430000/05DD095C-F6C3-9A4F-9FB3-348A5A6403D5.root"
events = LazyTree(ROOTFile(f), "Events")

total_E = Threads.Atomic{Float32}(0.0)
nsel = Threads.Atomic{Int64}(0)

@time Threads.@threads for evt in events
    evt.nMuon != 4 && continue
    (all(evt.Muon_pt .> 5) && all(abs.(evt.Muon_eta) .< 2.4)) || continue
    sum(evt.Muon_charge) != 0 && continue
    E = sum(evt.Muon_pt .* cosh.(evt.Muon_eta))
    Threads.atomic_add!(total_E, E)
    Threads.atomic_add!(nsel, 1)
end
println("<Eμ>/event $(total_E.value/nsel.value)GeV")

[tamasgal]

Using the file locally works, right?

[peremato]

Yes. Perfectly.