Traceback (most recent call last):


 "dask_error.py", line 31, in <module>

main(client)


 "dask_error.py", line 22, in main

df2 = dd.read_parquet('/data1/green.parquet')


 "/home/shekhar/anaconda3/lib/python3.5/site-packages/dask/dataframe/io/parquet.py", line 85, in read_parquet

minmax = fastparquet.api.sorted_partitioned_columns(pf)


 "/home/shekhar/anaconda3/lib/python3.5/site-packages/fastparquet/api.py", line 508, in sorted_partitioned_columns

s = statistics(pf)


 "/home/shekhar/anaconda3/lib/python3.5/site-packages/fastparquet/api.py", line 470, in statistics

L = list(map(statistics, obj.row_groups))


 "/home/shekhar/anaconda3/lib/python3.5/site-packages/fastparquet/api.py", line 467, in statistics

for c in obj.columns}


 "/home/shekhar/anaconda3/lib/python3.5/site-packages/fastparquet/api.py", line 467, in <dictcomp>

for c in obj.columns}


 "/home/shekhar/anaconda3/lib/python3.5/site-packages/fastparquet/api.py", line 456, in statistics

rv['max'] = encoding.read_plain(ensure_bytes(s.max), md.type, 1)[0]


 "/home/shekhar/anaconda3/lib/python3.5/site-packages/fastparquet/encoding.py", line 38, in read_plain

return np.frombuffer(byte_buffer(raw_bytes), dtype=dtype, count=count)
ValueError: buffer is smaller than requested size

Traceback (most recent call last):


 "/var/lib/awx/venv/awx/lib/python2.7/site-packages/django/core/handlers/exception.py", line 41, in inner

response = get_response(request)


 "/usr/lib/python2.7/site-packages/awx/wsgi.py", line 65, in _legacy_get_response

return super(AWXWSGIHandler, self)._legacy_get_response(request)


 "/var/lib/awx/venv/awx/lib/python2.7/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response

response = self._get_response(request)


 "/var/lib/awx/venv/awx/lib/python2.7/site-packages/django/core/handlers/base.py", line 187, in _get_response

response = self.process_exception_by_middleware(e, request)


 "/var/lib/awx/venv/awx/lib/python2.7/site-packages/django/core/handlers/base.py", line 185, in _get_response

response = wrapped_callback(request, *callback_args, **callback_kwargs)


 "/var/lib/awx/venv/awx/lib/python2.7/site-packages/django/utils/decorators.py", line 185, in inner

return func(*args, **kwargs)


 "/var/lib/awx/venv/awx/lib/python2.7/site-packages/django/views/generic/base.py", line 68, in view

return self.dispatch(request, *args, **kwargs)


 "/usr/lib/python2.7/site-packages/awx/sso/views.py", line 42, in dispatch

auth.login(self.request, self.request.user)


 "/var/lib/awx/venv/awx/lib/python2.7/site-packages/django/contrib/auth/__init__.py", line 150, in login

'You have multiple authentication backends configured and '
ValueError: You have multiple authentication backends configured and therefore must provide the `backend` argument or set the `backend` attribute on the user.
