[Core] ray.ActorID.nil().job_id

[minerharry]

What happened + What you expected to happen

Accessing the job_id field of a nil ActorID (just the getattribute, not even executing the method) results in a full python crash instead of raising an appropriate exception.

Versions / Dependencies

Tested on ray 3.0.0.dev0 and 2.47.0, python 3.9 and 3.10

Reproduction script

Repro code:

from ray import ActorID
ActorId.nil().job_id

Output: [sometimes the stacktrace just says "Unknown", the following is from a self-built install)

[2025-06-16 22:29:27,301 C 92497 92497] id.cc:160:  Check failed: !IsNil() 
*** StackTrace Information ***
/home/miner/github/ray/python/ray/_raylet.so(+0x1612377) [0x76e597612377] ray::operator<<()
/home/miner/github/ray/python/ray/_raylet.so(_ZN3ray6RayLogD1Ev+0x514) [0x76e597616124] ray::RayLog::~RayLog()
/home/miner/github/ray/python/ray/_raylet.so(_ZNK3ray7ActorID5JobIdEv+0x10f) [0x76e59745888f] ray::ActorID::JobId()
/home/miner/github/ray/python/ray/_raylet.so(+0x859dbb) [0x76e596859dbb] __pyx_getprop_3ray_7_raylet_7ActorID_job_id()
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyObject_GenericGetAttrWithDict+0x2d6) [0x5ffe508c5cd6] _PyObject_GenericGetAttrWithDict
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x733) [0x5ffe508b7763] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5ffe508b61e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalCodeWithName+0x48) [0x5ffe508b5e98] _PyEval_EvalCodeWithName
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyEval_EvalCodeEx+0x39) [0x5ffe508b5e49] PyEval_EvalCodeEx
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyEval_EvalCode+0x1b) [0x5ffe5096074b] PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1d4324) [0x5ffe50965324] builtin_exec
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x137163) [0x5ffe508c8163] cfunction_vectorcall_FASTCALL
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x3af) [0x5ffe508b73df] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1d6cd2) [0x5ffe50967cd2] gen_send_ex
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x68e4) [0x5ffe508bd914] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1d6cd2) [0x5ffe50967cd2] gen_send_ex
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x68e4) [0x5ffe508bd914] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1d6cd2) [0x5ffe50967cd2] gen_send_ex
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1421ac) [0x5ffe508d31ac] method_vectorcall_O
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5ffe508b7694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5ffe508c79fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x3af) [0x5ffe508b73df] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5ffe508c79fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5ffe508b7694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5ffe508b61e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x143b6b) [0x5ffe508d4b6b] method_vectorcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x1167) [0x5ffe508b8197] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5ffe508c79fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5ffe508b7694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5ffe508c79fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5ffe508b7694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5ffe508c79fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5ffe508b7694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5ffe508b61e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x143b6b) [0x5ffe508d4b6b] method_vectorcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyObject_Call+0xbc) [0x5ffe508d52ec] PyObject_Call
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x369d) [0x5ffe508ba6cd] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5ffe508b61e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyFunction_Vectorcall+0xd9) [0x5ffe508c7759] _PyFunction_Vectorcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x3af) [0x5ffe508b73df] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5ffe508b61e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalCodeWithName+0x48) [0x5ffe508b5e98] _PyEval_EvalCodeWithName
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyEval_EvalCodeEx+0x39) [0x5ffe508b5e49] PyEval_EvalCodeEx
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyEval_EvalCode+0x1b) [0x5ffe5096074b] PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1fcc2a) [0x5ffe5098dc2a] run_eval_code_obj
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1f90f3) [0x5ffe5098a0f3] run_mod
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x942c4) [0x5ffe508252c4] pyrun_file.cold
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyRun_SimpleFileExFlags+0x1c0) [0x5ffe50984020] PyRun_SimpleFileExFlags
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(Py_RunMain+0x344) [0x5ffe509815e4] Py_RunMain
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(Py_BytesMain+0x37) [0x5ffe50954577] Py_BytesMain
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x76e59f82a1ca]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x76e59f82a28b] __libc_start_main
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1c348e) [0x5ffe5095448e]

Issue Severity

None

[minerharry]

Interestingly, this also happens for TaskID.nil().job_id(), but only when you execute the method - unlike ActorID.nil().job_id, simply accessing TaskID.nil().job_id doesn't crash. It also doesn't crash on TaskID.nil().actor_id or actor_id() - those just return a nil actorid. perhaps a nil TaskID / ActorID should also return nil JobIDs?

Stack trace for TaskID.nil().job_id():

[2025-06-16 23:09:58,727 C 95161 95161] id.cc:160:  Check failed: !IsNil() 
*** StackTrace Information ***
/home/miner/github/ray/python/ray/_raylet.so(+0x1612377) [0x787217812377] ray::operator<<()
/home/miner/github/ray/python/ray/_raylet.so(_ZN3ray6RayLogD1Ev+0x514) [0x787217816124] ray::RayLog::~RayLog()
/home/miner/github/ray/python/ray/_raylet.so(_ZNK3ray7ActorID5JobIdEv+0x10f) [0x78721765888f] ray::ActorID::JobId()
/home/miner/github/ray/python/ray/_raylet.so(_ZNK3ray6TaskID5JobIdEv+0x33) [0x787217658933] ray::TaskID::JobId()
/home/miner/github/ray/python/ray/_raylet.so(+0x86e600) [0x787216a6e600] __pyx_pw_3ray_7_raylet_6TaskID_15job_id()
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5b0914579694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5b09145781e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalCodeWithName+0x48) [0x5b0914577e98] _PyEval_EvalCodeWithName
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyEval_EvalCodeEx+0x39) [0x5b0914577e49] PyEval_EvalCodeEx
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyEval_EvalCode+0x1b) [0x5b091462274b] PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1d4324) [0x5b0914627324] builtin_exec
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x137163) [0x5b091458a163] cfunction_vectorcall_FASTCALL
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x3af) [0x5b09145793df] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1d6cd2) [0x5b0914629cd2] gen_send_ex
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x68e4) [0x5b091457f914] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1d6cd2) [0x5b0914629cd2] gen_send_ex
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x68e4) [0x5b091457f914] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1d6cd2) [0x5b0914629cd2] gen_send_ex
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1421ac) [0x5b09145951ac] method_vectorcall_O
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5b0914579694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5b09145899fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x3af) [0x5b09145793df] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5b09145899fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5b0914579694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5b09145781e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x143b6b) [0x5b0914596b6b] method_vectorcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x1167) [0x5b091457a197] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5b09145899fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5b0914579694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5b09145899fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5b0914579694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1369fa) [0x5b09145899fa] function_code_fastcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x664) [0x5b0914579694] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5b09145781e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x143b6b) [0x5b0914596b6b] method_vectorcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyObject_Call+0xbc) [0x5b09145972ec] PyObject_Call
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x369d) [0x5b091457c6cd] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5b09145781e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyFunction_Vectorcall+0xd9) [0x5b0914589759] _PyFunction_Vectorcall
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalFrameDefault+0x3af) [0x5b09145793df] _PyEval_EvalFrameDefault
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1251e5) [0x5b09145781e5] _PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(_PyEval_EvalCodeWithName+0x48) [0x5b0914577e98] _PyEval_EvalCodeWithName
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyEval_EvalCodeEx+0x39) [0x5b0914577e49] PyEval_EvalCodeEx
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyEval_EvalCode+0x1b) [0x5b091462274b] PyEval_EvalCode
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1fcc2a) [0x5b091464fc2a] run_eval_code_obj
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1f90f3) [0x5b091464c0f3] run_mod
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x942c4) [0x5b09144e72c4] pyrun_file.cold
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(PyRun_SimpleFileExFlags+0x1c0) [0x5b0914646020] PyRun_SimpleFileExFlags
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(Py_RunMain+0x344) [0x5b09146435e4] Py_RunMain
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(Py_BytesMain+0x37) [0x5b0914616577] Py_BytesMain
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x78722142a1ca]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x78722142a28b] __libc_start_main
/home/miner/miniforge3/envs/ray_wsl_develop/bin/python3.9(+0x1c348e) [0x5b091461648e]

[dayshah]

Hey, interested in what your use case is for this? Can bump the priority if you have a way to get nil actor ids. I agree ideally we shouldn't crash, if you want to push a fix yourself, we can review it.

[minerharry]

I personally don't have a use case, but I'm working on type-stubbing the ray.includes files and noticed that those fields show up in ActorID. nil ActorIDs are used sporadically around the python codebase, I'll look to see if any are critical. As to the fix, I'm woefully inexperienced in Cython (and especially Cppython) but there may be an easy fix.