Traceback (most recent call last):


 "/Users/wenjun/miniconda3/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 3417, in run_code

exec(code_obj, self.user_global_ns, self.user_ns)


 "<ipython-input-12-59b23abcea9d>", line 1, in <module>

mdf.sort_values(0).execute()


 "/Users/wenjun/Code/mars/mars/core.py", line 646, in execute

return run()


 "/Users/wenjun/Code/mars/mars/core.py", line 642, in run

self.data.execute(session, **kw)


 "/Users/wenjun/Code/mars/mars/core.py", line 379, in execute

return run()


 "/Users/wenjun/Code/mars/mars/core.py", line 374, in run

session.run(self, **kw)


 "/Users/wenjun/Code/mars/mars/session.py", line 505, in run

result = self._sess.run(*tileables, **kw)


 "/Users/wenjun/Code/mars/mars/session.py", line 111, in run

res = self._executor.execute_tileables(tileables, **kw)


 "/Users/wenjun/Code/mars/mars/utils.py", line 457, in _inner

return func(*args, **kwargs)


 "/Users/wenjun/Code/mars/mars/executor.py", line 883, in execute_tileables

self.execute_graph(chunk_graph, list(temp_result_keys),


 "/Users/wenjun/Code/mars/mars/executor.py", line 698, in execute_graph

res = graph_execution.execute(retval)


 "/Users/wenjun/Code/mars/mars/executor.py", line 579, in execute

future.result()


 "/Users/wenjun/miniconda3/lib/python3.8/concurrent/futures/_base.py", line 432, in result

return self.__get_result()


 "/Users/wenjun/miniconda3/lib/python3.8/concurrent/futures/_base.py", line 388, in __get_result

raise self._exception


 "/Users/wenjun/miniconda3/lib/python3.8/concurrent/futures/thread.py", line 57, in run

result = self.fn(*self.args, **self.kwargs)


 "/Users/wenjun/Code/mars/mars/utils.py", line 457, in _inner

return func(*args, **kwargs)


 "/Users/wenjun/Code/mars/mars/executor.py", line 446, in _execute_operand

self.handle_op(first_op, results, self._mock)


 "/Users/wenjun/Code/mars/mars/executor.py", line 378, in handle_op

return Executor.handle(*args, **kw)


 "/Users/wenjun/Code/mars/mars/executor.py", line 649, in handle

return runner(results, op)


 "/Users/wenjun/Code/mars/mars/dataframe/sort/psrs.py", line 577, in execute

cls._execute_map(ctx, op)


 "/Users/wenjun/Code/mars/mars/dataframe/sort/psrs.py", line 535, in _execute_map

cls._execute_dataframe_map(ctx, op)


 "/Users/wenjun/Code/mars/mars/dataframe/sort/psrs.py", line 490, in _execute_dataframe_map

poses = records.searchsorted(p_records, side='right')
TypeError: '<' not supported between instances of 'NoneType' and 'str'

Traceback (most recent call last):


 "/opt/wal-e/lib64/python3.6/site-packages/gevent/greenlet.py", line 536, in run

result = self._run(*self.args, **self.kwargs)


 "/opt/wal-e/lib64/python3.6/site-packages/wal_e/worker/upload.py", line 97, in __call__

tpart.tarfile_write(pl.stdin)


 "/opt/wal-e/lib64/python3.6/site-packages/wal_e/tar_partition.py", line 315, in tarfile_write

self._padded_tar_add(tar, et_info)


 "/opt/wal-e/lib64/python3.6/site-packages/wal_e/tar_partition.py", line 242, in _padded_tar_add

tar.addfile(et_info.tarinfo, f)


 "/usr/lib64/python3.6/tarfile.py", line 1973, in addfile

copyfileobj(fileobj, self.fileobj, tarinfo.size, bufsize=bufsize)
TypeError: copyfileobj() got an unexpected keyword argument 'bufsize'
