Traceback (most recent call last):

 "mergehdf5.py", line 100, in <module>
main()

 "mergehdf5.py", line 95, in main
merge_files(options.outputfile, files, delete=False, append=options.append)

 "mergehdf5.py", line 81, in merge_files
out_store_keys = merge_file(out_store, in_store, out_store_keys, append=append)

 "mergehdf5.py", line 52, in merge_file
out_store.put(key, to_merge_in, format='t', append=True, min_itemsize=STR_SIZE)

 "/opt/anaconda/lib/python2.7/site-packages/pandas/io/pytables.py", line 818, in put
self._write_to_group(key, value, append=append, **kwargs)

 "/opt/anaconda/lib/python2.7/site-packages/pandas/io/pytables.py", line 1270, in _write_to_group
s.write(obj=value, append=append, complib=complib, **kwargs)

 "/opt/anaconda/lib/python2.7/site-packages/pandas/io/pytables.py", line 3891, in write
obj=obj, data_columns=obj.columns, **kwargs)

 "/opt/anaconda/lib/python2.7/site-packages/pandas/io/pytables.py", line 3605, in write
**kwargs)

 "/opt/anaconda/lib/python2.7/site-packages/pandas/io/pytables.py", line 3136, in create_axes
if self.infer_axes():

 "/opt/anaconda/lib/python2.7/site-packages/pandas/io/pytables.py", line 2137, in infer_axes
s = self.storable

 "/opt/anaconda/lib/python2.7/site-packages/pandas/io/pytables.py", line 2832, in storable
return getattr(self.group, 'table', None)

 "/opt/anaconda/lib/python2.7/site-packages/tables/group.py", line 811, in __getattr__
return self._f_get_child(name)

 "/opt/anaconda/lib/python2.7/site-packages/tables/group.py", line 684, in _f_get_child
return self._v_file._get_node(childpath)

 "/opt/anaconda/lib/python2.7/site-packages/tables/file.py", line 1562, in _get_node
node = self._node_manager.get_node(nodepath)

 "/opt/anaconda/lib/python2.7/site-packages/tables/file.py", line 436, in get_node
node = self.node_factory(key)

 "/opt/anaconda/lib/python2.7/site-packages/tables/group.py", line 1158, in _g_load_child
return UnImplemented(self, childname)

 "/opt/anaconda/lib/python2.7/site-packages/tables/unimplemented.py", line 69, in __init__
super(UnImplemented, self).__init__(parentnode, name)

 "/opt/anaconda/lib/python2.7/site-packages/tables/leaf.py", line 262, in __init__
super(Leaf, self).__init__(parentnode, name, _log)

 "/opt/anaconda/lib/python2.7/site-packages/tables/node.py", line 271, in __init__
self._v_objectid = self._g_open()

 "/opt/anaconda/lib/python2.7/site-packages/tables/unimplemented.py", line 72, in _g_open
(self.shape, self.byteorder, object_id) = self._open_unimplemented()

 "hdf5extension.pyx", line 2095, in tables.hdf5extension.UnImplemented._open_unimplemented (tables/hdf5extension.c:19140)TypeError: argument 2 to map() must support iteration
Traceback (most recent call last):


 "/home/rb/miniconda3/envs/pedl/lib/python3.6/site-packages/horovod/common/util.py", line 73, in _target_fn

ext = importlib.import_module('.' + ext_base_name, 'horovod')


 "/home/rb/miniconda3/envs/pedl/lib/python3.6/importlib/__init__.py", line 126, in import_module

return _bootstrap._gcd_import(name[level:], package, level)


 "<frozen importlib._bootstrap>", line 994, in _gcd_import


 "<frozen importlib._bootstrap>", line 971, in _find_and_load


 "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked


 "<frozen importlib._bootstrap>", line 665, in _load_unlocked


 "<frozen importlib._bootstrap_external>", line 678, in exec_module


 "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed


 "/home/rb/miniconda3/envs/pedl/lib/python3.6/site-packages/horovod/torch/__init__.py", line 31, in <module>

__file__, 'mpi_lib', '_mpi_lib')


 "/home/rb/miniconda3/envs/pedl/lib/python3.6/site-packages/horovod/common/util.py", line 51, in check_extension

'Horovod with %s=1 to debug the build error.' % (ext_name, ext_env_var))
ImportError: Extension horovod.torch has not been built.
If this is not expected, reinstall Horovod with HOROVOD_WITH_PYTORCH=1 to debug the build error.
