My parallel worker fall back to 3 workers when running at 4 workers

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I was running a my code using parpool(4) which using 4 workers. However, I noticed after the execution of my code(having each worker writing to their own files), the workers falls back to 3. What could be the reason behind this?
Raymond Norris
Raymond Norris on 24 Aug 2022
It looks familar. It is possible for a pool to drop a worker and still stay open, but MATLAB would have notified you
An unexpected error occurred during PARFOR: Error in remote execution of parfor: Java is shutting down
Sounds like there's some frailty in the parpool if no user code is explicitly erroring out. I would suggest contacting Support (

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