def _check_serialization(spark, rows, testname, schema=None):
from oarphpy import util
from oarphpy.spark import RowAdapter
TEST_TEMPDIR = testutil.test_tempdir('spark_row_adapter_test')
adapted_rows = [RowAdapter.to_row(r) for r in rows]
if schema:
df = spark.createDataFrame(adapted_rows,
schema=schema,
verifySchema=False)
# verifySchema is expensive and improperly erros on mostly empty rows
else:
df = spark.createDataFrame(adapted_rows)
# Automatically samples both rows to get schema
outpath = os.path.join(TEST_TEMPDIR, 'rowdata_%s' % testname)
df.write.parquet(outpath)
df2 = spark.read.parquet(outpath)
decoded_wrapped_rows = df2.collect()
decoded_rows = [RowAdapter.from_row(row) for row in decoded_wrapped_rows]
# We can't do assert sorted(rows) == sorted(decoded_rows)
# because numpy syntatic sugar breaks ==
import pprint
def sorted_row_str(rowz):
return pprint.pformat(sorted(rowz, key=lambda row: row['id']))
assert sorted_row_str(rows) == sorted_row_str(decoded_rows)
def test_archive_flyweight_tar():
TEST_TEMPDIR = testutil.test_tempdir('test_archive_flyweight_tar')
fixture_path = os.path.join(TEST_TEMPDIR, 'test.tar')
# Create the fixture:
# test.tar
# |- foo: "foo"
# |- bar: "bar"
# ... an archive with a few files, where each file contains just a string
# that matches the name of the file in the archive
ss = [b'foo', b'bar', b'bazzzz']
import tarfile
with tarfile.open(fixture_path, mode='w') as t:
for s in ss:
from io import BytesIO
buf = BytesIO()
buf.write(s)
buf.seek(0)
buf.seek(0, os.SEEK_END)
buf_len = buf.tell()
buf.seek(0)
info = tarfile.TarInfo(name=s.decode('utf-8'))
info.size = buf_len
t.addfile(tarinfo=info, fileobj=buf)
# Test reading!
fws = util.ArchiveFileFlyweight.fws_from(fixture_path)
_check_fws(fws, ss)
def test_archive_rdd_tar(self):
TEST_TEMPDIR = testutil.test_tempdir('test_archive_rdd_tar')
fixture_path = os.path.join(TEST_TEMPDIR, 'test.tar')
# Create the fixture:
# test.tar
# |- foo: "foo"
# |- bar: "bar"
# ... an archive with a few files, where each file contains just a string
# that matches the name of the file in the archive
ss = [b'foo', b'bar', b'baz']
import tarfile
with tarfile.open(fixture_path, mode='w') as t:
for s in ss:
from io import BytesIO
buf = BytesIO()
buf.write(s)
buf.seek(0)
buf.seek(0, os.SEEK_END)
buf_len = buf.tell()
buf.seek(0)
info = tarfile.TarInfo(name=s.decode('utf-8'))
info.size = buf_len
t.addfile(tarinfo=info, fileobj=buf)
# Test Reading!
with testutil.LocalSpark.sess() as spark:
from oarphpy import spark as S
fw_rdd = S.archive_rdd(spark, fixture_path)
self._check_rdd(fw_rdd, ss)
def _check_serialization(self, rows, schema=None, do_adaption=True):
import inspect
from oarphpy import util
from oarphpy.spark import RowAdapter
test_name = inspect.stack()[1][3]
TEST_TEMPDIR = testutil.test_tempdir('TestRowAdapter.' + test_name)
if do_adaption:
adapted_rows = [RowAdapter.to_row(r) for r in rows]
else:
adapted_rows = rows
with testutil.LocalSpark.sess() as spark:
if schema:
df = spark.createDataFrame(adapted_rows,
schema=schema,
verifySchema=False)
# verifySchema is expensive and improperly errors on mostly
# empty rows
else:
df = spark.createDataFrame(adapted_rows)
# Automatically samples rows to get schema
outpath = os.path.join(TEST_TEMPDIR, 'rowdata_%s' % test_name)
df.write.parquet(outpath)
df2 = spark.read.parquet(outpath)
decoded_wrapped_rows = df2.collect()
if do_adaption:
decoded_rows = [
RowAdapter.from_row(row) for row in decoded_wrapped_rows
]
# We can't do assert sorted(rows) == sorted(decoded_rows)
# because numpy syntatic sugar breaks __eq__, so use pprint,
# which is safe for our tests
import pprint
def sorted_row_str(rowz):
if self._is_spark_2x():
# Spark 2.x has non-stable sorting semantics for Row
if len(rowz) > 1:
rowz = sorted(rowz, key=lambda r: r.id)
return pprint.pformat(rowz)
else:
return pprint.pformat(sorted(rowz))
assert sorted_row_str(rows) == sorted_row_str(decoded_rows)
return df
def test_archive_flyweight_zip():
TEST_TEMPDIR = testutil.test_tempdir('test_archive_flyweight_zip')
fixture_path = os.path.join(TEST_TEMPDIR, 'test.zip')
# Create the fixture:
# test.zip
# |- foo: "foo"
# |- bar: "bar"
# ... an archive with a few files, where each file contains just a string
# that matches the name of the file in the archive
ss = [b'foo', b'bar', b'baz']
import zipfile
with zipfile.ZipFile(fixture_path, mode='w') as z:
for s in ss:
z.writestr(s.decode('utf-8'), s)
# Test Reading!
fws = util.ArchiveFileFlyweight.fws_from(fixture_path)
_check_fws(fws, ss)
def test_tf_records_file_as_list_of_str():
TEST_TEMPDIR = testutil.test_tempdir(
'test_tf_records_file_as_list_of_str')
util.cleandir(TEST_TEMPDIR)
# Create the fixture: simply three strings in the file. A TFRecords file
# is just a size-delimited concatenation of string records.
ss = [b'foo', b'bar', b'bazzzz']
fixture_path = os.path.join(TEST_TEMPDIR, 'test.tfrecord')
with tf.io.TFRecordWriter(fixture_path) as writer:
for s in ss:
writer.write(s)
# Test reading!
tf_lst = util.TFRecordsFileAsListOfStrings(open(fixture_path, 'rb'))
assert len(tf_lst) == len(ss)
assert sorted(tf_lst) == sorted(ss)
for i in range(len(ss)):
assert tf_lst[i] == ss[i]
def test_archive_rdd_zip(self):
TEST_TEMPDIR = testutil.test_tempdir('test_archive_rdd_zip')
fixture_path = os.path.join(TEST_TEMPDIR, 'test.zip')
# Create the fixture:
# test.zip
# |- foo: "foo"
# |- bar: "bar"
# ... an archive with a few files, where each file contains just a string
# that matches the name of the file in the archive
ss = [b'foo', b'bar', b'baz']
import zipfile
with zipfile.ZipFile(fixture_path, mode='w') as z:
for s in ss:
z.writestr(s.decode('utf-8'), s)
# Test Reading!
with testutil.LocalSpark.sess() as spark:
from oarphpy import spark as S
fw_rdd = S.archive_rdd(spark, fixture_path)
self._check_rdd(fw_rdd, ss)
