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[Cherry-pick] "[CoreWorker] Partially address Ray child process leaks by killing all child processes in the CoreWorker shutdown sequence. #33976" #34181

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merged 1 commit into from
Apr 9, 2023
Merged

[Cherry-pick] "[CoreWorker] Partially address Ray child process leaks by killing all child processes in the CoreWorker shutdown sequence. #33976" #34181

merged 1 commit into from
Apr 9, 2023

Commits on Apr 7, 2023

  1. [CoreWorker] Partially address Ray child process leaks by killing all… 

    … child processes in the CoreWorker shutdown sequence. (ray-project#33976)

We kill all child processes when a Ray worker process exits. This addresses process leaks that caused GPU OOM errors in ray-project#31451. There is some risk to this PR, particularly if Ray users rely on Ray's existing behavior of leaking processes. We don't know of any such user, but we provide a new flag RAY_kill_child_processes_on_worker_exit to provide a workaround in case someone is impacted.
    @cadedaniel
    cadedaniel committed Apr 7, 2023
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