File "/tmp/env/lib/python3.5/site-packages/dask/async.py", line 272, in _execute_task
return func(*args2)
File "qq5.py", line 7, in x
assert arg1 == 122, "qwe"
| worker_id = None
AssertionError: qwe
I don't understand at all where worker_id came from.
Running Dask Distributed, I see the output, which reports things which don't exist in that scope at all...
File "/tmp/env/lib/python3.5/site-packages/dask/base.py", line 203, in compute
results = get(dsk, keys, **kwargs)
| x = b'\x80\x04\x95\xa1\x00\x00\x00\x00\x00\x00\x00\x8c\x16tblib.pickling_support\x94\x8c\x12unpickle_traceback\x94\x93\x94\x8c\x05tblib\x94\x8c\x05Frame\x94\x93\x94)\x81\x94}\x94(\x8c\x06f_code\x94h\x03\x8c\x04Code\x94\x93\x94)\x81\x94}\x94(\x8c\x07co_name\x94\x8c\x01x\x94\x8c\x0bco_filename\x94\x8c\x06qq4.py\x94ub\x8c\tf_globals\x94}\x94ubK\tN\x87\x94R\x94.'
File "/tmp/env/lib/python3.5/site-packages/distributed/client.py", line 1590, in get
resources=resources)
| ret = <tblib.Traceback object at 0x7f95aeadfcf8>
| tb_frame = <tblib.Frame object at 0x7f95aeadf908>
| tb_lineno = 9
| tb_next = None
File "/tmp/env/lib/python3.5/site-packages/distributed/utils.py", line 223, in sync
six.reraise(*error[0])
| code = <code object x at 0x7f95aeb33270, file "qq4.py", line 9>
| f_code = <tblib.Code object at 0x7f95aeadf9b0>
| self = <tblib.Traceback object at 0x7f95aeadfcf8>
| tb = <traceback object at 0x7f95aeaeb148>
File "/tmp/env/lib/python3.5/site-packages/six.py", line 686, in reraise
raise value
AssertionError: qwe
The direct call to x() produces a sane output, so it should be some magic involved with Dask. Better-Exceptions module just hangs in this situation, so TBVaccine is better in this respect, but it is still completely misleading and unhelpful.
Here is the reproduction:
The error:
I don't understand at all where
worker_id
came from.Running Dask Distributed, I see the output, which reports things which don't exist in that scope at all...
The direct call to
x()
produces a sane output, so it should be some magic involved with Dask. Better-Exceptions module just hangs in this situation, so TBVaccine is better in this respect, but it is still completely misleading and unhelpful.