Details
-
Bug
-
Status: Resolved
-
Major
-
Resolution: Fixed
-
1.3.1
Description
We found 2 flaky tests when running CI on a self-hosted AWS EC2 instance, both are related to constructing Spark DataFrames from GeoPandas DataFrames. The failed tests and error messages are as follows.
TestGeometryConvert.test_from_geopandas_convert
self = <tests.serialization.test_deserializers.TestGeometryConvert object at 0x7f77a5a84af0>
def test_from_geopandas_convert(self):
gdf = gpd.read_file(os.path.join(tests_resource, "shapefiles/gis_osm_pois_free_1/"))
> self.spark.createDataFrame(
gdf
).show()
tests/serialization/test_deserializers.py:116:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/session.py:891: in createDataFrame
return super(SparkSession, self).createDataFrame( # type: ignore[call-overload]
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/pandas/conversion.py:437: in createDataFrame
return self._create_dataframe(converted_data, schema, samplingRatio, verifySchema)
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/session.py:936: in _create_dataframe
rdd, struct = self._createFromLocal(map(prepare, data), schema)
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/session.py:631: in _createFromLocal
struct = self._inferSchemaFromList(data, names=schema)
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/session.py:517: in _inferSchemaFromList
schema = reduce(
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/types.py:1383: in _merge_type
fields = [
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/types.py:1385: in <listcomp>
f.name, _merge_type(f.dataType, nfs.get(f.name, NullType()), name=new_name(f.name))
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
a = StringType(), b = DoubleType(), name = 'field name'
def _merge_type(
a: Union[StructType, ArrayType, MapType, DataType],
b: Union[StructType, ArrayType, MapType, DataType],
name: Optional[str] = None,
) -> Union[StructType, ArrayType, MapType, DataType]:
if name is None:
def new_msg(msg: str) -> str:
return msg
def new_name(n: str) -> str:
return "field %s" % n
else:
def new_msg(msg: str) -> str:
return "%s: %s" % (name, msg)
def new_name(n: str) -> str:
return "field %s in %s" % (n, name)
if isinstance(a, NullType):
return b
elif isinstance(b, NullType):
return a
elif isinstance(a, TimestampType) and isinstance(b, TimestampNTZType):
return a
elif isinstance(a, TimestampNTZType) and isinstance(b, TimestampType):
return b
elif type(a) is not type(b):
# TODO: type cast (such as int -> long)
> raise TypeError(new_msg("Can not merge type %s and %s" % (type(a), type(b))))
E TypeError: field name: Can not merge type <class 'pyspark.sql.types.StringType'> and <class 'pyspark.sql.types.DoubleType'>
TestsSerializers.test_geopandas_convertion
self = <tests.serialization.test_serializers.TestsSerializers object at 0x7f77a5a87310>
def test_geopandas_convertion(self):
gdf = gpd.read_file(os.path.join(tests_resource, "shapefiles/gis_osm_pois_free_1/"))
> print(self.spark.createDataFrame(
gdf
).toPandas())
tests/serialization/test_serializers.py:148:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/session.py:891: in createDataFrame
return super(SparkSession, self).createDataFrame( # type: ignore[call-overload]
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/pandas/conversion.py:437: in createDataFrame
return self._create_dataframe(converted_data, schema, samplingRatio, verifySchema)
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/session.py:936: in _create_dataframe
rdd, struct = self._createFromLocal(map(prepare, data), schema)
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/session.py:631: in _createFromLocal
struct = self._inferSchemaFromList(data, names=schema)
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/session.py:517: in _inferSchemaFromList
schema = reduce(
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/types.py:1383: in _merge_type
fields = [
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/types.py:1385: in <listcomp>
f.name, _merge_type(f.dataType, nfs.get(f.name, NullType()), name=new_name(f.name))
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
a = StringType(), b = DoubleType(), name = 'field name'
def _merge_type(
a: Union[StructType, ArrayType, MapType, DataType],
b: Union[StructType, ArrayType, MapType, DataType],
name: Optional[str] = None,
) -> Union[StructType, ArrayType, MapType, DataType]:
if name is None:
def new_msg(msg: str) -> str:
return msg
def new_name(n: str) -> str:
return "field %s" % n
else:
def new_msg(msg: str) -> str:
return "%s: %s" % (name, msg)
def new_name(n: str) -> str:
return "field %s in %s" % (n, name)
if isinstance(a, NullType):
return b
elif isinstance(b, NullType):
return a
elif isinstance(a, TimestampType) and isinstance(b, TimestampNTZType):
return a
elif isinstance(a, TimestampNTZType) and isinstance(b, TimestampType):
return b
elif type(a) is not type(b):
# TODO: type cast (such as int -> long)
> raise TypeError(new_msg("Can not merge type %s and %s" % (type(a), type(b))))
E TypeError: field name: Can not merge type <class 'pyspark.sql.types.StringType'> and <class 'pyspark.sql.types.DoubleType'>
../spark-3.3.0-bin-hadoop3/python/pyspark/sql/types.py:1378: TypeError
We found lots of missing values in the "name" column in the test Pandas DataFrame, and it is a known problem that PySpark sometimes fails to convert Pandas dataframes containing missing values. We'll replace the missing values before converting the DataFrame to eliminate this problem.
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