def test_extract_subgraph_specific_query(property_graph_instance):
"""
Graph of only transactions after time 1639085000 for merchant_id 4 (should
be a graph of 2 vertices, 1 edge)
"""
pG = property_graph_instance
selection = pG.select_edges("(_TYPE_=='transactions') & "
"(merchant_id==4) & "
"(time>1639085000)")
G = pG.extract_subgraph(selection=selection,
create_using=DiGraph_inst,
edge_weight_property="card_num")
expected_edgelist = cudf.DataFrame({
"src": [89216],
"dst": [4],
"weights": [8832]
})
actual_edgelist = G.unrenumber(G.edgelist.edgelist_df,
"src",
preserve_order=True)
actual_edgelist = G.unrenumber(actual_edgelist, "dst", preserve_order=True)
assert G.is_directed()
assert_frame_equal(expected_edgelist, actual_edgelist, check_like=True)
def test_enable_batch_edgelist_replication(graph_file, directed, dask_client):
gc.collect()
G = utils.generate_cugraph_graph_from_file(graph_file, directed)
G.enable_batch()
df = G.edgelist.edgelist_df
for worker in G.batch_edgelists:
replicated_df = G.batch_edgelists[worker].result()
assert_frame_equal(df, replicated_df)
def test_basic_assert_frame_equal(
rdtype,
rname,
index,
check_exact,
check_dtype,
check_names,
check_like,
mismatch,
):
data = [1, 2, 1]
p_left = pd.DataFrame(index=[1, 2, 3])
p_left["a"] = np.array(data, dtype="int8")
p_left["b"] = np.array(data, dtype="int16")
if mismatch:
p_left["c"] = np.array([1, 2, 3], dtype="int64")
else:
p_left["c"] = np.array(data, dtype="int64")
p_right = pd.DataFrame(index=index)
for dtype, name in zip(rdtype, rname):
p_right[name] = np.array(data, dtype=dtype)
left = cudf.from_pandas(p_left)
right = cudf.from_pandas(p_right)
kind = None
try:
pd.testing.assert_frame_equal(
p_left,
p_right,
check_exact=check_exact,
check_dtype=check_dtype,
check_names=check_names,
check_like=check_like,
)
except BaseException as e:
kind = type(e)
if kind is not None:
with pytest.raises(kind):
assert_frame_equal(
left,
right,
check_exact=check_exact,
check_dtype=check_dtype,
check_names=check_names,
check_like=check_like,
)
else:
assert_frame_equal(
left,
right,
check_exact=check_exact,
check_dtype=check_dtype,
check_names=check_names,
check_like=check_like,
)
def test_replicate_cudf_dataframe_no_weights(input_data_path, dask_client):
gc.collect()
df = cudf.read_csv(
input_data_path,
delimiter=" ",
names=["src", "dst"],
dtype=["int32", "int32"],
)
worker_to_futures = replication.replicate_cudf_dataframe(df)
for worker in worker_to_futures:
replicated_df = worker_to_futures[worker].result()
assert_frame_equal(df, replicated_df)
def test_orc_reader_basic(datadir, inputfile, columns, use_index, engine):
path = datadir / inputfile
try:
orcfile = pa.orc.ORCFile(path)
except pa.ArrowIOError as e:
pytest.skip(".orc file is not found: %s" % e)
expect = orcfile.read(columns=columns).to_pandas()
got = cudf.read_orc(path,
engine=engine,
columns=columns,
use_index=use_index)
assert_frame_equal(cudf.from_pandas(expect), got, check_categorical=False)
def test_orc_writer_statistics_frequency(datadir, tmpdir, stats_freq):
reference_file = "TestOrcFile.demo-12-zlib.orc"
pdf_fname = datadir / reference_file
gdf_fname = tmpdir.join("gdf.orc")
try:
orcfile = pa.orc.ORCFile(pdf_fname)
except Exception as excpr:
if type(excpr).__name__ == "ArrowIOError":
pytest.skip(".orc file is not found")
else:
print(type(excpr).__name__)
expect = cudf.from_pandas(orcfile.read().to_pandas())
expect.to_orc(gdf_fname.strpath, statistics=stats_freq)
got = cudf.from_pandas(pa.orc.ORCFile(gdf_fname).read().to_pandas())
assert_frame_equal(expect, got)
def test_orc_writer(datadir, tmpdir, reference_file, columns, compression):
pdf_fname = datadir / reference_file
gdf_fname = tmpdir.join("gdf.orc")
try:
orcfile = pa.orc.ORCFile(pdf_fname)
except Exception as excpr:
if type(excpr).__name__ == "ArrowIOError":
pytest.skip(".orc file is not found")
else:
print(type(excpr).__name__)
expect = cudf.from_pandas(orcfile.read(columns=columns).to_pandas())
expect.to_orc(gdf_fname.strpath, compression=compression)
got = cudf.from_pandas(
pa.orc.ORCFile(gdf_fname).read(columns=columns).to_pandas())
assert_frame_equal(expect, got)
def test_extract_subgraph_edge_prop_condition_only(property_graph_instance):
pG = property_graph_instance
selection = pG.select_edges("_TYPE_=='transactions'")
G = pG.extract_subgraph(selection=selection, create_using=DiGraph_inst)
# last item is the DataFrame rows
transactions = dataset1["transactions"][-1]
(srcs, dsts) = zip(*[(t[0], t[1]) for t in transactions])
expected_edgelist = cudf.DataFrame({"src": srcs, "dst": dsts})
expected_edgelist = expected_edgelist.sort_values(by="src",
ignore_index=True)
actual_edgelist = G.unrenumber(G.edgelist.edgelist_df,
"src",
preserve_order=True)
actual_edgelist = G.unrenumber(actual_edgelist, "dst", preserve_order=True)
actual_edgelist = actual_edgelist.sort_values(by="src", ignore_index=True)
assert G.is_directed()
assert_frame_equal(expected_edgelist, actual_edgelist, check_like=True)
def test_extract_subgraph_graph_without_vert_props():
"""
Ensure a subgraph can be extracted from a PropertyGraph that does not have
vertex properties.
"""
from cugraph.experimental import PropertyGraph
transactions = dataset1["transactions"]
relationships = dataset1["relationships"]
pG = PropertyGraph()
pG.add_edge_data(cudf.DataFrame(columns=transactions[0],
data=transactions[1]),
type_name="transactions",
vertex_id_columns=("user_id", "merchant_id"),
property_columns=None)
pG.add_edge_data(cudf.DataFrame(columns=relationships[0],
data=relationships[1]),
type_name="relationships",
vertex_id_columns=("user_id_1", "user_id_2"),
property_columns=None)
G = pG.extract_subgraph(selection=pG.select_edges("_SRC_ == 89216"),
create_using=DiGraph_inst,
edge_weight_property="relationship_type",
default_edge_weight=0)
expected_edgelist = cudf.DataFrame({
"src": [89216, 89216, 89216],
"dst": [4, 89021, 32431],
"weights": [0, 9, 9]
})
actual_edgelist = G.unrenumber(G.edgelist.edgelist_df,
"src",
preserve_order=True)
actual_edgelist = G.unrenumber(actual_edgelist, "dst", preserve_order=True)
assert G.is_directed()
assert_frame_equal(expected_edgelist, actual_edgelist, check_like=True)
def test_select_vertices_from_previous_selection(property_graph_instance):
"""
Ensures that the intersection of vertices of multiple types (only vertices
that are both type A and type B) can be selected.
"""
pG = property_graph_instance
# Select referrals from only taxpayers who are users (should be 1)
selection = pG.select_vertices("_TYPE_ == 'taxpayers'")
selection = pG.select_vertices("_TYPE_ == 'users'",
from_previous_selection=selection)
selection += pG.select_edges("_TYPE_ == 'referrals'")
G = pG.extract_subgraph(create_using=DiGraph_inst, selection=selection)
expected_edgelist = cudf.DataFrame({"src": [89021], "dst": [78634]})
actual_edgelist = G.unrenumber(G.edgelist.edgelist_df,
"src",
preserve_order=True)
actual_edgelist = G.unrenumber(actual_edgelist, "dst", preserve_order=True)
assert G.is_directed()
assert_frame_equal(expected_edgelist, actual_edgelist, check_like=True)
def test_extract_subgraph_vertex_edge_prop_condition(property_graph_instance):
pG = property_graph_instance
selection = pG.select_vertices("(user_location==47906) | "
"(user_location==78750)")
selection += pG.select_edges("_TYPE_=='referrals'")
G = pG.extract_subgraph(selection=selection,
create_using=DiGraph_inst,
edge_weight_property="stars")
expected_edgelist = cudf.DataFrame({
"src": [78634],
"dst": [32431],
"weights": [4]
})
actual_edgelist = G.unrenumber(G.edgelist.edgelist_df,
"src",
preserve_order=True)
actual_edgelist = G.unrenumber(actual_edgelist, "dst", preserve_order=True)
assert G.is_directed()
assert_frame_equal(expected_edgelist, actual_edgelist, check_like=True)
def test_extract_subgraph_vertex_prop_condition_only(property_graph_instance):
pG = property_graph_instance
selection = pG.select_vertices("(_TYPE_=='taxpayers') & (amount<100)")
G = pG.extract_subgraph(selection=selection,
create_using=DiGraph_inst,
edge_weight_property="stars")
expected_edgelist = cudf.DataFrame({
"src": [89021],
"dst": [78634],
"weights": [4]
})
actual_edgelist = G.unrenumber(G.edgelist.edgelist_df,
"src",
preserve_order=True)
actual_edgelist = G.unrenumber(actual_edgelist, "dst", preserve_order=True)
assert G.is_directed()
# check_like=True ignores differences in column/index ordering
assert_frame_equal(expected_edgelist, actual_edgelist, check_like=True)
def test_chunked_orc_writer(datadir, tmpdir, reference_file, columns,
compression):
pdf_fname = datadir / reference_file
gdf_fname = tmpdir.join("chunked_gdf.orc")
try:
orcfile = pa.orc.ORCFile(pdf_fname)
except Exception as excpr:
if type(excpr).__name__ == "ArrowIOError":
pytest.skip(".orc file is not found")
else:
print(type(excpr).__name__)
pdf = orcfile.read(columns=columns).to_pandas()
gdf = cudf.from_pandas(pdf)
expect = pd.concat([pdf, pdf]).reset_index(drop=True)
writer = ORCWriter(gdf_fname, compression=compression)
writer.write_table(gdf)
writer.write_table(gdf)
writer.close()
got = pa.orc.ORCFile(gdf_fname).read(columns=columns).to_pandas()
assert_frame_equal(cudf.from_pandas(expect), cudf.from_pandas(got))
def test_extract_subgraph_default_edge_weight(property_graph_instance):
"""
Ensure the default_edge_weight value is added to edges with missing
properties used for weights.
"""
pG = property_graph_instance
selection = pG.select_edges("_TYPE_=='transactions'")
G = pG.extract_subgraph(create_using=DiGraph_inst,
selection=selection,
edge_weight_property="volume",
default_edge_weight=99)
# last item is the DataFrame rows
transactions = dataset1["transactions"][-1]
(srcs, dsts, weights) = zip(*[(t[0], t[1], t[2]) for t in transactions])
# replace None with the expected value (convert to a list to replace)
weights_list = list(weights)
weights_list[weights.index(None)] = 99.
weights = tuple(weights_list)
expected_edgelist = cudf.DataFrame({
"src": srcs,
"dst": dsts,
"weights": weights
})
expected_edgelist = expected_edgelist.sort_values(by="src",
ignore_index=True)
actual_edgelist = G.unrenumber(G.edgelist.edgelist_df,
"src",
preserve_order=True)
actual_edgelist = G.unrenumber(actual_edgelist, "dst", preserve_order=True)
actual_edgelist = actual_edgelist.sort_values(by="src", ignore_index=True)
assert G.is_directed()
assert_frame_equal(expected_edgelist, actual_edgelist, check_like=True)
def test_edge_props_to_graph(property_graph_instance):
"""
Access the property DataFrames directly and use them to perform a more
complex query, then call edge_props_to_graph() to create the corresponding
graph.
"""
pG = property_graph_instance
# Select referrals from only taxpayers who are users (should be 1)
# Find the list of vertices that are both users and taxpayers
def contains_both(df):
return (df["_TYPE_"] == "taxpayers").any() and \
(df["_TYPE_"] == "users").any()
verts = pG._vertex_prop_dataframe.groupby("_VERTEX_")\
.apply(contains_both)
verts = verts[verts].keys() # get an array of only verts that have both
# Find the "referral" edge_props containing only those verts
referrals = pG._edge_prop_dataframe["_TYPE_"] == "referrals"
srcs = pG._edge_prop_dataframe[referrals]["_SRC_"].isin(verts)
dsts = pG._edge_prop_dataframe[referrals]["_DST_"].isin(verts)
matching_edges = (srcs & dsts)
indices = matching_edges.index[matching_edges]
edge_props = pG._edge_prop_dataframe.loc[indices]
G = pG.edge_props_to_graph(edge_props, create_using=DiGraph_inst)
expected_edgelist = cudf.DataFrame({"src": [89021], "dst": [78634]})
actual_edgelist = G.unrenumber(G.edgelist.edgelist_df,
"src",
preserve_order=True)
actual_edgelist = G.unrenumber(actual_edgelist, "dst", preserve_order=True)
assert G.is_directed()
assert_frame_equal(expected_edgelist, actual_edgelist, check_like=True)
