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#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import os
import unittest
from pyspark import SparkConf, SparkContext
from pyspark.sql import SparkSession, SQLContext, Row
from pyspark.testing.sqlutils import ReusedSQLTestCase
from pyspark.testing.utils import PySparkTestCase
class SparkSessionTests(ReusedSQLTestCase):
def test_sqlcontext_reuses_sparksession(self):
sqlContext1 = SQLContext(self.sc)
sqlContext2 = SQLContext(self.sc)
self.assertTrue(sqlContext1.sparkSession is sqlContext2.sparkSession)
class SparkSessionTests1(ReusedSQLTestCase):
# We can't include this test into SQLTests because we will stop class's SparkContext and cause
# other tests failed.
def test_sparksession_with_stopped_sparkcontext(self):
self.sc.stop()
sc = SparkContext('local[4]', self.sc.appName)
spark = SparkSession.builder.getOrCreate()
try:
df = spark.createDataFrame([(1, 2)], ["c", "c"])
df.collect()
finally:
spark.stop()
sc.stop()
class SparkSessionTests2(PySparkTestCase):
# This test is separate because it's closely related with session's start and stop.
# See SPARK-23228.
def test_set_jvm_default_session(self):
spark = SparkSession.builder.getOrCreate()
try:
self.assertTrue(spark._jvm.SparkSession.getDefaultSession().isDefined())
finally:
spark.stop()
self.assertTrue(spark._jvm.SparkSession.getDefaultSession().isEmpty())
def test_jvm_default_session_already_set(self):
# Here, we assume there is the default session already set in JVM.
jsession = self.sc._jvm.SparkSession(self.sc._jsc.sc())
self.sc._jvm.SparkSession.setDefaultSession(jsession)
spark = SparkSession.builder.getOrCreate()
try:
self.assertTrue(spark._jvm.SparkSession.getDefaultSession().isDefined())
# The session should be the same with the exiting one.
self.assertTrue(jsession.equals(spark._jvm.SparkSession.getDefaultSession().get()))
finally:
spark.stop()
class SparkSessionTests3(unittest.TestCase):
def test_active_session(self):
spark = SparkSession.builder \
.master("local") \
.getOrCreate()
try:
activeSession = SparkSession.getActiveSession()
df = activeSession.createDataFrame([(1, 'Alice')], ['age', 'name'])
self.assertEqual(df.collect(), [Row(age=1, name=u'Alice')])
finally:
spark.stop()
def test_get_active_session_when_no_active_session(self):
active = SparkSession.getActiveSession()
self.assertEqual(active, None)
spark = SparkSession.builder \
.master("local") \
.getOrCreate()
active = SparkSession.getActiveSession()
self.assertEqual(active, spark)
spark.stop()
active = SparkSession.getActiveSession()
self.assertEqual(active, None)
def test_SparkSession(self):
spark = SparkSession.builder \
.master("local") \
.config("some-config", "v2") \
.getOrCreate()
try:
self.assertEqual(spark.conf.get("some-config"), "v2")
self.assertEqual(spark.sparkContext._conf.get("some-config"), "v2")
self.assertEqual(spark.version, spark.sparkContext.version)
spark.sql("CREATE DATABASE test_db")
spark.catalog.setCurrentDatabase("test_db")
self.assertEqual(spark.catalog.currentDatabase(), "test_db")
spark.sql("CREATE TABLE table1 (name STRING, age INT) USING parquet")
self.assertEqual(spark.table("table1").columns, ['name', 'age'])
self.assertEqual(spark.range(3).count(), 3)
finally:
spark.sql("DROP DATABASE test_db CASCADE")
spark.stop()
def test_global_default_session(self):
spark = SparkSession.builder \
.master("local") \
.getOrCreate()
try:
self.assertEqual(SparkSession.builder.getOrCreate(), spark)
finally:
spark.stop()
def test_default_and_active_session(self):
spark = SparkSession.builder \
.master("local") \
.getOrCreate()
activeSession = spark._jvm.SparkSession.getActiveSession()
defaultSession = spark._jvm.SparkSession.getDefaultSession()
try:
self.assertEqual(activeSession, defaultSession)
finally:
spark.stop()
def test_config_option_propagated_to_existing_session(self):
session1 = SparkSession.builder \
.master("local") \
.config("spark-config1", "a") \
.getOrCreate()
self.assertEqual(session1.conf.get("spark-config1"), "a")
session2 = SparkSession.builder \
.config("spark-config1", "b") \
.getOrCreate()
try:
self.assertEqual(session1, session2)
self.assertEqual(session1.conf.get("spark-config1"), "b")
finally:
session1.stop()
def test_new_session(self):
session = SparkSession.builder \
.master("local") \
.getOrCreate()
newSession = session.newSession()
try:
self.assertNotEqual(session, newSession)
finally:
session.stop()
newSession.stop()
def test_create_new_session_if_old_session_stopped(self):
session = SparkSession.builder \
.master("local") \
.getOrCreate()
session.stop()
newSession = SparkSession.builder \
.master("local") \
.getOrCreate()
try:
self.assertNotEqual(session, newSession)
finally:
newSession.stop()
def test_active_session_with_None_and_not_None_context(self):
from pyspark.context import SparkContext
from pyspark.conf import SparkConf
sc = None
session = None
try:
sc = SparkContext._active_spark_context
self.assertEqual(sc, None)
activeSession = SparkSession.getActiveSession()
self.assertEqual(activeSession, None)
sparkConf = SparkConf()
sc = SparkContext.getOrCreate(sparkConf)
activeSession = sc._jvm.SparkSession.getActiveSession()
self.assertFalse(activeSession.isDefined())
session = SparkSession(sc)
activeSession = sc._jvm.SparkSession.getActiveSession()
self.assertTrue(activeSession.isDefined())
activeSession2 = SparkSession.getActiveSession()
self.assertNotEqual(activeSession2, None)
finally:
199 ↛ 201line 199 didn't jump to line 201, because the condition on line 199 was never false if session is not None:
session.stop()
201 ↛ exitline 201 didn't return from function 'test_active_session_with_None_and_not_None_context', because the condition on line 201 was never false if sc is not None:
sc.stop()
class SparkSessionTests4(ReusedSQLTestCase):
def test_get_active_session_after_create_dataframe(self):
session2 = None
try:
activeSession1 = SparkSession.getActiveSession()
session1 = self.spark
self.assertEqual(session1, activeSession1)
session2 = self.spark.newSession()
activeSession2 = SparkSession.getActiveSession()
self.assertEqual(session1, activeSession2)
self.assertNotEqual(session2, activeSession2)
session2.createDataFrame([(1, 'Alice')], ['age', 'name'])
activeSession3 = SparkSession.getActiveSession()
self.assertEqual(session2, activeSession3)
session1.createDataFrame([(1, 'Alice')], ['age', 'name'])
activeSession4 = SparkSession.getActiveSession()
self.assertEqual(session1, activeSession4)
finally:
224 ↛ exitline 224 didn't return from function 'test_get_active_session_after_create_dataframe', because the condition on line 224 was never false if session2 is not None:
session2.stop()
class SparkSessionTests5(unittest.TestCase):
def setUp(self):
# These tests require restarting the Spark context so we set up a new one for each test
# rather than at the class level.
self.sc = SparkContext('local[4]', self.__class__.__name__, conf=SparkConf())
self.spark = SparkSession(self.sc)
def tearDown(self):
self.sc.stop()
self.spark.stop()
def test_sqlcontext_with_stopped_sparksession(self):
# SPARK-30856: test that SQLContext.getOrCreate() returns a usable instance after
# the SparkSession is restarted.
sql_context = self.spark._wrapped
self.spark.stop()
sc = SparkContext('local[4]', self.sc.appName)
spark = SparkSession(sc) # Instantiate the underlying SQLContext
new_sql_context = spark._wrapped
self.assertIsNot(new_sql_context, sql_context)
self.assertIs(SQLContext.getOrCreate(sc).sparkSession, spark)
try:
df = spark.createDataFrame([(1, 2)], ['c', 'c'])
df.collect()
finally:
spark.stop()
self.assertIsNone(SQLContext._instantiatedContext)
sc.stop()
def test_sqlcontext_with_stopped_sparkcontext(self):
# SPARK-30856: test initialization via SparkSession when only the SparkContext is stopped
self.sc.stop()
self.sc = SparkContext('local[4]', self.sc.appName)
self.spark = SparkSession(self.sc)
self.assertIs(SQLContext.getOrCreate(self.sc).sparkSession, self.spark)
def test_get_sqlcontext_with_stopped_sparkcontext(self):
# SPARK-30856: test initialization via SQLContext.getOrCreate() when only the SparkContext
# is stopped
self.sc.stop()
self.sc = SparkContext('local[4]', self.sc.appName)
self.assertIs(SQLContext.getOrCreate(self.sc)._sc, self.sc)
class SparkSessionBuilderTests(unittest.TestCase):
def test_create_spark_context_first_then_spark_session(self):
sc = None
session = None
try:
conf = SparkConf().set("key1", "value1")
sc = SparkContext('local[4]', "SessionBuilderTests", conf=conf)
session = SparkSession.builder.config("key2", "value2").getOrCreate()
self.assertEqual(session.conf.get("key1"), "value1")
self.assertEqual(session.conf.get("key2"), "value2")
self.assertEqual(session.sparkContext, sc)
self.assertFalse(sc.getConf().contains("key2"))
self.assertEqual(sc.getConf().get("key1"), "value1")
finally:
291 ↛ 293line 291 didn't jump to line 293, because the condition on line 291 was never false if session is not None:
session.stop()
293 ↛ exitline 293 didn't return from function 'test_create_spark_context_first_then_spark_session', because the condition on line 293 was never false if sc is not None:
sc.stop()
def test_another_spark_session(self):
session1 = None
session2 = None
try:
session1 = SparkSession.builder.config("key1", "value1").getOrCreate()
session2 = SparkSession.builder.config("key2", "value2").getOrCreate()
self.assertEqual(session1.conf.get("key1"), "value1")
self.assertEqual(session2.conf.get("key1"), "value1")
self.assertEqual(session1.conf.get("key2"), "value2")
self.assertEqual(session2.conf.get("key2"), "value2")
self.assertEqual(session1.sparkContext, session2.sparkContext)
self.assertEqual(session1.sparkContext.getConf().get("key1"), "value1")
self.assertFalse(session1.sparkContext.getConf().contains("key2"))
finally:
312 ↛ 314line 312 didn't jump to line 314, because the condition on line 312 was never false if session1 is not None:
session1.stop()
314 ↛ exitline 314 didn't return from function 'test_another_spark_session', because the condition on line 314 was never false if session2 is not None:
session2.stop()
class SparkExtensionsTest(unittest.TestCase):
# These tests are separate because it uses 'spark.sql.extensions' which is
# static and immutable. This can't be set or unset, for example, via `spark.conf`.
@classmethod
def setUpClass(cls):
import glob
from pyspark.find_spark_home import _find_spark_home
SPARK_HOME = _find_spark_home()
filename_pattern = (
"sql/core/target/scala-*/test-classes/org/apache/spark/sql/"
"SparkSessionExtensionSuite.class")
331 ↛ 332line 331 didn't jump to line 332, because the condition on line 331 was never true if not glob.glob(os.path.join(SPARK_HOME, filename_pattern)):
raise unittest.SkipTest(
"'org.apache.spark.sql.SparkSessionExtensionSuite' is not "
"available. Will skip the related tests.")
# Note that 'spark.sql.extensions' is a static immutable configuration.
cls.spark = SparkSession.builder \
.master("local[4]") \
.appName(cls.__name__) \
.config(
"spark.sql.extensions",
"org.apache.spark.sql.MyExtensions") \
.getOrCreate()
@classmethod
def tearDownClass(cls):
cls.spark.stop()
def test_use_custom_class_for_extensions(self):
self.assertTrue(
self.spark._jsparkSession.sessionState().planner().strategies().contains(
self.spark._jvm.org.apache.spark.sql.MySparkStrategy(self.spark._jsparkSession)),
"MySparkStrategy not found in active planner strategies")
self.assertTrue(
self.spark._jsparkSession.sessionState().analyzer().extendedResolutionRules().contains(
self.spark._jvm.org.apache.spark.sql.MyRule(self.spark._jsparkSession)),
"MyRule not found in extended resolution rules")
if __name__ == "__main__":
from pyspark.sql.tests.test_session import * # noqa: F401
try:
import xmlrunner # type: ignore[import]
testRunner = xmlrunner.XMLTestRunner(output='target/test-reports', verbosity=2)
except ImportError:
testRunner = None
unittest.main(testRunner=testRunner, verbosity=2)
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