Added timestamp of operation put to disk queue

[Raalsky]

Before submitting checklist

• Did you update the CHANGELOG? (not for test updates, internal changes/refactors or CI/CD setup)
• Did you ask the docs owner to review all the user-facing changes?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (4c1aeec) 79.91% compared to head (522dec0) 76.36%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1569      +/-   ##
==========================================
- Coverage   79.91%   76.36%   -3.56%     
==========================================
  Files         287      287              
  Lines       14362    14365       +3     
==========================================
- Hits        11478    10970     -508     
- Misses       2884     3395     +511     

Flag	Coverage Δ
e2e-management	?
e2e-s3	?
e2e-s3-gcs	?
e2e-standard	?
macos	73.31% <100.00%> (-6.33%)	⬇️
py3.7	73.61% <100.00%> (-5.74%)	⬇️
py3.9	?
ubuntu	73.47% <100.00%> (-6.17%)	⬇️
unit	73.61% <100.00%> (-0.59%)	⬇️
windows	72.78% <100.00%> (-6.78%)	⬇️

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