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ORPA-pyOpenRPA/Resources/WPy64-3720/python-3.7.2.amd64/Lib/site-packages/dask/bytes/hdfs3.py

41 lines
948 B

from __future__ import print_function, division, absolute_import
import posixpath
from .glob import generic_glob
from ..base import tokenize
import hdfs3
class HDFS3HadoopFileSystem(object):
sep = "/"
def __init__(self, **kwargs):
self.fs = hdfs3.HDFileSystem(**kwargs)
@classmethod
def from_hdfs3(cls, fs):
out = object.__new__(cls)
out.fs = fs
return out
def open(self, path, mode='rb', **kwargs):
return self.fs.open(path, mode=mode, **kwargs)
def glob(self, path):
return sorted(generic_glob(self.fs, posixpath, path))
def mkdirs(self, path):
return self.fs.makedirs(path)
def ukey(self, path):
return tokenize(path, self.fs.info(path)['last_mod'])
def size(self, path):
return self.fs.info(path)['size']
def _get_pyarrow_filesystem(self):
from .pyarrow import HDFS3Wrapper
return HDFS3Wrapper(self.fs)