Win32: Can't use @parallel: pickle.PicklingError: it's not found as fabric.tasks.inner

Greetings, First of all thanks a lot for a really great tool. But I have a problem with parrallel executions.

My setup:

• ActivePython 2.7.2.5 (ActiveState Software Inc.) based on Python 2.7.2 (default, Jun 24 2011, 12:21:10) [MSC v.1500 32 bit (Intel)] on win32
• Fabric 1.3.3 (installed via pypm install fabric )
• WinXP

I have a script wich works perfectly with serial executions. But when I add @parallel decorator to one of the tasks, for ex:

@roles('app', 'db')
@parallel
def checkout_or_update(branch):
    path = podman_sources + branch
    if not exists(path):
        with cd(podman_sources):
            run(checkout_command % {"branch" : branch})
    else:
        with cd(path):
            run('svn up')

the I get something like that:

$ fab deploy:trunk,staging
[192.168.102.183] Executing task 'checkout_or_update'
[192.168.102.169] Executing task 'checkout_or_update'
[192.168.102.167] Executing task 'checkout_or_update'
Traceback (most recent call last):
  File "C:\Documents and Settings\me\Application Data\Python\Python27\site-packages\fabric\main.py", line 682, in
main
    *args, **kwargs
  File "C:\Documents and Settings\me\Application Data\Python\Python27\site-packages\fabric\tasks.py", line 248, in execute
    task.run(*args, **new_kwargs)
  File "C:\Documents and Settings\me\Application Data\Python\Python27\site-packages\fabric\tasks.py", line 105, in run
    return self.wrapped(*args, **kwargs)
  File "D:\Mishail\My Documents\wspace\app\fabfile.py", line 122, in deploy
    execute(checkout_or_update, branch)
  File "C:\Documents and Settings\me\Application Data\Python\Python27\site-packages\fabric\tasks.py", line 237, in execute
    exitcodes = jobs.run()
  File "C:\Documents and Settings\me\Application Data\Python\Python27\site-packages\fabric\job_queue.py", line 124, in run
    _advance_the_queue()
  File "C:\Documents and Settings\me\Application Data\Python\Python27\site-packages\fabric\job_queue.py", line 114, in _advance_the_queue
    job.start()
  File "D:\Technologies\Python27\lib\multiprocessing\process.py", line 130, in start
    self._popen = Popen(self)
  File "D:\Technologies\Python27\lib\multiprocessing\forking.py", line 271, in __init__
    dump(process_obj, to_child, HIGHEST_PROTOCOL)
  File "D:\Technologies\Python27\lib\multiprocessing\forking.py", line 193, in dump
    ForkingPickler(file, protocol).dump(obj)
  File "D:\Technologies\Python27\lib\pickle.py", line 224, in dump
    self.save(obj)
  File "D:\Technologies\Python27\lib\pickle.py", line 331, in save
    self.save_reduce(obj=obj, *rv)
  File "D:\Technologies\Python27\lib\pickle.py", line 419, in save_reduce
    save(state)
  File "D:\Technologies\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "D:\Technologies\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "D:\Technologies\Python27\lib\pickle.py", line 681, in _batch_setitems
    save(v)
  File "D:\Technologies\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "D:\Technologies\Python27\lib\pickle.py", line 748, in save_global
    (obj, module, name))
pickle.PicklingError: Can't pickle <function inner at 0x00F73F70>: it's not found as fabric.tasks.inner
$ Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "D:\Technologies\Python27\lib\multiprocessing\forking.py", line 374, in main
    self = load(from_parent)
  File "D:\Technologies\Python27\lib\pickle.py", line 1378, in load
    return Unpickler(file).load()
  File "D:\Technologies\Python27\lib\pickle.py", line 858, in load
    dispatch[key](self)
  File "D:\Technologies\Python27\lib\pickle.py", line 880, in load_eof
    raise EOFError
EOFError

[arjunagi]

@bitprophet , I am using Fabric 1.10 and python 2.7 on Windows 7. When I use the “parallel” decorator, I am getting the above mentioned PicklingError. I was wondering if this issue has been resolved as this ticket has been closed.

[ploxiln]

“make sure things are now thread safe” was done and the result is fabric v2, available now in alpha