failures not handled while exception raised

[Veda Annayappa]

The issue occurs because the failures object isnt handled when its length is more than 1
in taskflow/types/failure.py

        if len(failures) == 1:
            failures[0].reraise()
        elif len(failures) > 1:
            raise exc.WrappedFailure(failures)
============================================================================================

Traceback (most recent call last):
      File "/root/esca/nova-powervm/.tox/py27/local/lib/python2.7/site-packages/taskflow/engines/action_engine/executor.py", line 53, in _execute_task
        result = task.execute(**arguments)
      File "/root/esca/nova-powervm/.tox/py27/local/lib/python2.7/site-packages/pypowervm/utils/transaction.py", line 478, in execute
        self._wrapper = _execute(self._wrapper or self._getter)
      File "/root/esca/nova-powervm/.tox/py27/local/lib/python2.7/site-packages/pypowervm/utils/transaction.py", line 99, in _synchronize
        @lock.synchronized(wrp_or_spec.uuid)
    Traceback (most recent call last):
      File "/root/esca/nova-powervm/.tox/py27/local/lib/python2.7/site-packages/pypowervm/utils/transaction.py", line 785, in execute
        executor=ContextThreadPoolExecutor(self.max_workers)))
      File "/root/esca/nova-powervm/.tox/py27/local/lib/python2.7/site-packages/taskflow/engines/helpers.py", line 162, in run
        engine.run()
      File "/root/esca/nova-powervm/.tox/py27/local/lib/python2.7/site-packages/taskflow/engines/action_engine/engine.py", line 247, in run
        for _state in self.run_iter(timeout=timeout):
      File "/root/esca/nova-powervm/.tox/py27/local/lib/python2.7/site-packages/taskflow/engines/action_engine/engine.py", line 340, in run_iter
        failure.Failure.reraise_if_any(er_failures)
      File "/root/esca/nova-powervm/.tox/py27/local/lib/python2.7/site-packages/taskflow/types/failure.py", line 342, in reraise_if_any
        raise exc.WrappedFailure(failures)
    WrappedFailure: WrappedFailure: [Failure: AttributeError: 'str' object has no attribute 'uuid', Failure: AttributeError: 'str' object has no attribute 'uuid']

[Sowmya Divvi (sowmya)]

Hello Veda Annayappa,

I could see nova related logs from the error's above.
Could you let us know in what scenario the error was encountered.
So that we can try to reproduce it to fix the issue.

Best Regards,
Sowmya Divvi