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Use vertices SparkSession #474

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Merged
rjurney merged 2 commits into from
Jan 17, 2025
Merged

Use vertices SparkSession #474

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16c3aaa
Update graphframe.py
Nassizouz Dec 26, 2024
1c06d7f
Add unittest for multithreading usage
Nassizouz Jan 7, 2025
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2 changes: 1 addition & 1 deletion python/graphframes/graphframe.py
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,7 @@ class GraphFrame(object):
def __init__(self, v, e):
self._vertices = v
self._edges = e
self._spark = SparkSession.getActiveSession()
self._spark = v.sparkSession
self._sc = self._spark._sc
self._jvm_gf_api = _java_api(self._sc)

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22 changes: 22 additions & 0 deletions python/graphframes/tests.py
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Expand Up @@ -409,6 +409,28 @@ def test_triangle_counts(self):
c = g.triangleCount()
for row in c.select("id", "count").collect():
self.assertEqual(row.asDict()['count'], 1)

def test_mutithreaded_sparksession_usage(self):
# Test that we can use the GraphFrame API from multiple threads
localVertices = [(1, "A"), (2, "B"), (3, "C")]
localEdges = [(1, 2, "love"), (2, 1, "hate"), (2, 3, "follow")]
v = self.spark.createDataFrame(localVertices, ["id", "name"])
e = self.spark.createDataFrame(localEdges, ["src", "dst", "action"])


exc = None
def run_graphframe() -> None:
try:
GraphFrame(v, e)
except Exception as _e:
nonlocal exc
exc = _e

import threading
thread = threading.Thread(target=run_graphframe)
thread.start()
thread.join()
self.assertIsNone(exc, f"Exception was raised in thread: {exc}")


class GraphFrameExamplesTest(GraphFrameTestCase):
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