def test_tmp_move(self):
target = hdfs.HdfsTarget(is_tmp=True)
target2 = hdfs.HdfsTarget("luigi_hdfs_testdir")
if target2.exists():
target2.remove()
with target.open('w'):
pass
self.assertTrue(target.exists())
target.move(target2.path)
self.assertFalse(target.exists())
self.assertTrue(target2.exists())
def test_tmp_move(self):
target = hdfs.HdfsTarget(is_tmp=True)
target2 = hdfs.HdfsTarget(self._test_file())
if target2.exists():
target2.remove(skip_trash=True)
with target.open('w'):
pass
self.assertTrue(target.exists())
target.move(target2.path)
self.assertFalse(target.exists())
self.assertTrue(target2.exists())
def test_rename_no_parent(self):
if hdfs.exists("foo"):
hdfs.remove("foo")
target1 = hdfs.HdfsTarget(is_tmp=True)
target2 = hdfs.HdfsTarget("foo/bar")
with target1.open('w'):
pass
self.assertTrue(target1.exists())
target1.move(target2.path)
self.assertFalse(target1.exists())
self.assertTrue(target2.exists())
def put_file(self, local_target, local_filename, target_path):
if local_target.exists():
local_target.remove()
self.create_file(local_target)
target = hdfs.HdfsTarget(target_path)
if target.exists():
target.remove(skip_trash=True)
hdfs.mkdir(target.path)
client.put(local_target.path, target_path)
target_file_path = target_path + "/" + local_filename
return hdfs.HdfsTarget(target_file_path)
def test_rename_no_grandparent(self):
grandparent = self._test_dir() + '/foo'
if self.fs.exists(grandparent):
self.fs.remove(grandparent, skip_trash=True)
target1 = hdfs.HdfsTarget(is_tmp=True)
target2 = hdfs.HdfsTarget(grandparent + '/bar/baz')
with target1.open('w'):
pass
self.assertTrue(target1.exists())
target1.move(target2.path)
self.assertFalse(target1.exists())
self.assertTrue(target2.exists())
def test_multifile(self):
with self.target.open('w') as fobj:
fobj.write(b'foo\n')
second = hdfs.HdfsTarget(self.target.path + '/data2', format=hdfs.Plain)
with second.open('w') as fobj:
fobj.write(b'bar\n')
invisible = hdfs.HdfsTarget(self.target.path + '/_SUCCESS', format=hdfs.Plain)
with invisible.open('w') as fobj:
fobj.write(b'b0rk\n')
self.assertTrue(second.exists())
self.assertTrue(invisible.exists())
self.assertTrue(self.target.exists())
with self.target.open('r') as fobj:
parts = sorted(fobj.read().strip(b'\n').split(b'\n'))
self.assertEqual(tuple(parts), (b'bar', b'foo'))
def test_atomicity(self):
target = hdfs.HdfsTarget("luigi_hdfs_testfile")
if target.exists():
target.remove()
fobj = target.open("w")
self.assertFalse(target.exists())
fobj.close()
self.assertTrue(target.exists())
def test_with_close(self):
target = hdfs.HdfsTarget("luigi_hdfs_testfile")
if target.exists():
target.remove()
with target.open('w') as fobj:
fobj.write('hej\n')
self.assertTrue(target.exists())
def test_atomicity(self):
target = hdfs.HdfsTarget(self._test_file())
if target.exists():
target.remove(skip_trash=True)
fobj = target.open("w")
self.assertFalse(target.exists())
fobj.close()
self.assertTrue(target.exists())
def test_with_close(self):
target = hdfs.HdfsTarget(self._test_file())
if target.exists():
target.remove(skip_trash=True)
with target.open('w') as fobj:
fobj.write('hej\n')
self.assertTrue(target.exists())
def test_with_exception(self):
target = hdfs.HdfsTarget(self._test_file())
if target.exists():
target.remove(skip_trash=True)
def foo():
with target.open('w') as fobj:
fobj.write('hej\n')
raise TestException('Test triggered exception')
self.assertRaises(TestException, foo)
self.assertFalse(target.exists())
def test_create_parents(self):
parent = "luigi_hdfs_testdir"
target = hdfs.HdfsTarget("%s/testfile" % parent)
if hdfs.exists(parent):
hdfs.remove(parent)
self.assertFalse(hdfs.exists(parent))
fobj = target.open('w')
fobj.write('lol\n')
fobj.close()
self.assertTrue(hdfs.exists(parent))
self.assertTrue(target.exists())
def test_create_ancestors(self):
parent = self._test_dir()
target = hdfs.HdfsTarget("%s/foo/bar/baz" % parent)
if self.fs.exists(parent):
self.fs.remove(parent, skip_trash=True)
self.assertFalse(self.fs.exists(parent))
fobj = target.open('w')
fobj.write('lol\n')
fobj.close()
self.assertTrue(self.fs.exists(parent))
self.assertTrue(target.exists())
def test_tmp_cleanup(self):
path = self._test_file()
target = hdfs.HdfsTarget(path, is_tmp=True)
if target.exists():
target.remove(skip_trash=True)
with target.open('w') as fobj:
fobj.write('lol\n')
self.assertTrue(target.exists())
del target
import gc
gc.collect()
self.assertFalse(self.fs.exists(path))
def test_glob_exists(self):
target = hdfs.HdfsTarget("luigi_hdfs_testdir")
if target.exists():
target.remove()
hdfs.mkdir(target.path)
t1 = hdfs.HdfsTarget(target.path + "/part-00001")
t2 = hdfs.HdfsTarget(target.path + "/part-00002")
t3 = hdfs.HdfsTarget(target.path + "/another")
with t1.open('w') as f:
f.write('foo\n')
with t2.open('w') as f:
f.write('bar\n')
with t3.open('w') as f:
f.write('biz\n')
files = hdfs.HdfsTarget("luigi_hdfs_testdir/part-0000*")
self.assertEqual(files.glob_exists(2), True)
self.assertEqual(files.glob_exists(3), False)
self.assertEqual(files.glob_exists(1), False)
def test_glob_exists(self):
target_dir = hdfs.HdfsTarget(self._test_dir())
if target_dir.exists():
target_dir.remove(skip_trash=True)
self.fs.mkdir(target_dir.path)
t1 = hdfs.HdfsTarget(target_dir.path + "/part-00001")
t2 = hdfs.HdfsTarget(target_dir.path + "/part-00002")
t3 = hdfs.HdfsTarget(target_dir.path + "/another")
with t1.open('w') as f:
f.write('foo\n')
with t2.open('w') as f:
f.write('bar\n')
with t3.open('w') as f:
f.write('biz\n')
files = hdfs.HdfsTarget("%s/part-0000*" % target_dir.path)
self.assertTrue(files.glob_exists(2))
self.assertFalse(files.glob_exists(3))
self.assertFalse(files.glob_exists(1))
def test_readback(self):
target = hdfs.HdfsTarget(self._test_file())
if target.exists():
target.remove(skip_trash=True)
origdata = 'lol\n'
fobj = target.open("w")
fobj.write(origdata)
fobj.close()
fobj = target.open('r')
data = fobj.read()
self.assertEqual(origdata, data)
def tezt_rename_dont_move(self, client):
""" I happen to just want to test this, Since I know the codepaths will
be quite different for the three kinds of clients """
if client.exists('d'):
client.remove('d')
client.mkdir('d/a')
client.mkdir('d/b')
self.assertEqual(2, len(list(client.listdir('d'))))
target = hdfs.HdfsTarget('d/a', fs=client)
self.assertFalse(target.move_dir('d/b'))
self.assertEqual(2, len(list(client.listdir('d'))))
self.assertTrue(target.move_dir('d/c'))
self.assertEqual(2, len(list(client.listdir('d'))))
def test_readback(self):
target = hdfs.HdfsTarget("luigi_hdfs_testfile")
if target.exists():
target.remove()
origdata = 'lol\n'
fobj = target.open("w")
fobj.write(origdata)
fobj.close()
fobj = target.open('r')
data = fobj.read()
self.assertEqual(origdata, data)
def test_slow_exists(self):
target = hdfs.HdfsTarget(self._test_file())
try:
target.remove(skip_trash=True)
except:
pass
self.assertFalse(self.fs.exists(target.path))
target.open("w").close()
self.assertTrue(self.fs.exists(target.path))
def should_raise():
self.fs.exists("hdfs://doesnotexist/foo")
self.assertRaises(hdfs.HDFSCliError, should_raise)
def should_raise_2():
self.fs.exists("hdfs://_doesnotexist_/foo")
self.assertRaises(hdfs.HDFSCliError, should_raise_2)
def test_slow_exists(self):
target = hdfs.HdfsTarget("luigi_hdfs_testfile")
try:
target.remove()
except:
pass
self.assertFalse(hdfs.exists(target.path))
target.open("w").close()
self.assertTrue(hdfs.exists(target.path))
def should_raise():
hdfs.exists("hdfs://doesnotexist/foo")
self.assertRaises(RuntimeError, should_raise)
def should_raise_2():
hdfs.exists("hdfs://_doesnotexist_/foo")
self.assertRaises(RuntimeError, should_raise_2)
def setUp(self):
self.target = hdfs.HdfsTarget("luigi_hdfs_testfile",
format=self.format)
if self.target.exists():
self.target.remove(skip_trash=True)
def create_target(self, format=None):
target = hdfs.HdfsTarget(self._test_file(), format=format)
if target.exists():
target.remove(skip_trash=True)
return target
def test_luigi_tmp(self):
target = hdfs.HdfsTarget(is_tmp=True)
self.assertFalse(target.exists())
with target.open('w'):
pass
self.assertTrue(target.exists())
def setUp(self):
super(_HdfsFormatTest, self).setUp()
self.target = hdfs.HdfsTarget(self._test_file(), format=self.format)
if self.target.exists():
self.target.remove(skip_trash=True)
