process stop

[chenjianquan7]

FACT version

4.1.1

Environment

ubuntu20

Steps to reproduce

[2024-04-25 20:17:48][process][ERROR]: �[91mException in Analysis process:
Traceback (most recent call last):
File "/home/chenjianquan/FACT_core-4.1.1/src/helperFunctions/process.py", line 83, in run
Process.run(self)
File "/usr/lib/python3.8/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/home/chenjianquan/FACT_core-4.1.1/src/analysis/PluginBase.py", line 214, in worker
self.worker_processing_with_timeout(worker_id, next_task)
File "/home/chenjianquan/FACT_core-4.1.1/src/analysis/PluginBase.py", line 173, in worker_processing_with_timeout
process.start()
File "/usr/lib/python3.8/multiprocessing/process.py", line 121, in start
self._popen = self._Popen(self)
File "/usr/lib/python3.8/multiprocessing/context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "/usr/lib/python3.8/multiprocessing/context.py", line 277, in _Popen
return Popen(process_obj)
File "/usr/lib/python3.8/multiprocessing/popen_fork.py", line 16, in init
util._flush_std_streams()
File "/usr/lib/python3.8/multiprocessing/util.py", line 439, in _flush_std_streams
sys.stderr.flush()
OSError: [Errno 5] Input/output error

Observed Behavior

[2024-04-25 20:17:48][process][ERROR]: �[91mException in Analysis process:
Traceback (most recent call last):
File "/home/chenjianquan/FACT_core-4.1.1/src/helperFunctions/process.py", line 83, in run
Process.run(self)
File "/usr/lib/python3.8/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/home/chenjianquan/FACT_core-4.1.1/src/analysis/PluginBase.py", line 214, in worker
self.worker_processing_with_timeout(worker_id, next_task)
File "/home/chenjianquan/FACT_core-4.1.1/src/analysis/PluginBase.py", line 173, in worker_processing_with_timeout
process.start()
File "/usr/lib/python3.8/multiprocessing/process.py", line 121, in start
self._popen = self._Popen(self)
File "/usr/lib/python3.8/multiprocessing/context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "/usr/lib/python3.8/multiprocessing/context.py", line 277, in _Popen
return Popen(process_obj)
File "/usr/lib/python3.8/multiprocessing/popen_fork.py", line 16, in init
util._flush_std_streams()
File "/usr/lib/python3.8/multiprocessing/util.py", line 439, in _flush_std_streams
sys.stderr.flush()
OSError: [Errno 5] Input/output error

Expeced Behavior

[2024-04-25 20:17:48][process][ERROR]: �[91mException in Analysis process:
Traceback (most recent call last):
File "/home/chenjianquan/FACT_core-4.1.1/src/helperFunctions/process.py", line 83, in run
Process.run(self)
File "/usr/lib/python3.8/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/home/chenjianquan/FACT_core-4.1.1/src/analysis/PluginBase.py", line 214, in worker
self.worker_processing_with_timeout(worker_id, next_task)
File "/home/chenjianquan/FACT_core-4.1.1/src/analysis/PluginBase.py", line 173, in worker_processing_with_timeout
process.start()
File "/usr/lib/python3.8/multiprocessing/process.py", line 121, in start
self._popen = self._Popen(self)
File "/usr/lib/python3.8/multiprocessing/context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "/usr/lib/python3.8/multiprocessing/context.py", line 277, in _Popen
return Popen(process_obj)
File "/usr/lib/python3.8/multiprocessing/popen_fork.py", line 16, in init
util._flush_std_streams()
File "/usr/lib/python3.8/multiprocessing/util.py", line 439, in _flush_std_streams
sys.stderr.flush()
OSError: [Errno 5] Input/output error

Installation logs

install.log

PASTE HERE

Backend logs

fact_main_backend.log

PASTE HERE

Frontend logs

fact_main_frontend.log

PASTE HERE

Other information

No response

[jstucke]

It seems an analysis process unexpectedly crashed before even really starting, because the forked process was unable to access stderr. It's hard to tell what may have caused this without context. Could be a system-related issue (too many open files, full RAM, full drive, or something similar)