def checkSpark():
if request.method == 'POST':
try:
findspark.find()
return "Spark is properly installed"
except Exception as e:
return (str(e), 400)
def create_spark_session():
"""
Create Spark session.
"""
print("Create Spark session")
findspark.init()
findspark.find()
conf = pyspark.SparkConf().setAppName('appName').setMaster('local')
sc = pyspark.SparkContext(conf=conf)
spark = SparkSession(sc)
return spark
def test_make_class_model_saving(spark_df_class, pandas_factory_fixture):
spark, df = spark_df_class
path = findspark.find()
path = os.path.join(path, 'models')
test_path = os.path.join(path, 'test_class_model')
test_path = test_path + '_' + str(int(time()))
make_class_model(df,
spark,
test_path,
"test_class_model",
"test_target",
save=True)
cluster = Cluster(['127.0.0.1'], "9042")
session = cluster.connect("models")
session.row_factory = pandas_factory_fixture
session.default_fetch_size = None
query_latest = "Select Max(timestamp) from models_statistics where model_name = 'test_class_model'"
query_path = (
"Select model_path from models_statistics where timestamp = %s and model_name = 'test_class_model'"
" ALLOW FILTERING")
latest_timestamp = session.execute(
query_latest,
timeout=None)._current_rows.iloc[0]['system.max(timestamp)']
query_path = query_path % latest_timestamp
path = session.execute(query_path,
timeout=None)._current_rows.iloc[0]['model_path']
expected_path = test_path
actual_path = path
assert actual_path == expected_path
session.shutdown()
cluster.shutdown()
def init_spark():
print("Initializing Spark...")
import findspark
findspark.init() # uses SPARK_HOME
print("Spark found in : ", findspark.find())
import pyspark
from pyspark import SparkConf
from pyspark.sql import SparkSession
# use a unique temp dir for warehouse dir, so we can run multiple spark sessions in one dir
import tempfile
tmpdir = tempfile.TemporaryDirectory()
# print(tmpdir.name)
config = (
SparkConf().setAppName("TestApp").setMaster("local[*]").set(
'executor.memory',
'2g').set('spark.sql.warehouse.dir',
tmpdir.name).set("some_property",
"some_value") # another example
)
print("Spark config:\n\t", config.toDebugString().replace("\n", "\n\t"))
spark = SparkSession.builder.config(conf=config).getOrCreate()
print('Spark UI running on port ' +
spark.sparkContext.uiWebUrl.split(':')[2])
return spark
def writeToCassandra(stream, checkpoint="checkpoint"):
# Tworzenia połączenia spark-cassandra oraz zapisywanie strumienia danych do bazy danych Cassandra
checkpointLocation = os.path.join(findspark.find(), checkpoint)
checkpointLocation = os.path.join(checkpointLocation, checkpoint)
checkpointLocation = checkpointLocation + '_' + str(int(time()))
query = stream.writeStream \
.format("org.apache.spark.sql.cassandra") \
.outputMode('append') \
.options(table="predictions", keyspace="predictions", checkpointLocation=checkpointLocation,
failOnDataLoss="false") \
.start() #\
#.awaitTermination()
return query
def test_make_regr_model_pipeline(spark_df_regr):
spark, df = spark_df_regr
path = findspark.find()
path = os.path.join(path, 'models')
test_path = os.path.join(path, 'test_regr_model')
test_path = test_path + '_' + str(int(time()))
model, _ = make_regr_model(df, spark, test_path, "test_regr_model", "test_target",
save=False)
actual_stages = str([type(x) for x in model.stages])
expected_stages = "[<class 'pyspark.ml.feature.StringIndexerModel'>," \
" <class 'pyspark.ml.feature.StringIndexerModel'>," \
" <class 'pyspark.ml.feature.OneHotEncoderModel'>," \
" <class 'pyspark.ml.feature.VectorAssembler'>," \
" <class 'pyspark.ml.feature.VectorAssembler'>," \
" <class 'pyspark.ml.feature.StandardScalerModel'>," \
" <class 'pyspark.ml.feature.VectorAssembler'>," \
" <class 'pyspark.ml.regression.RandomForestRegressionModel'>]"
assert actual_stages == expected_stages
def test_writeToCassandra(predictions, pandas_factory_fixture):
predictions, spark, timestamp = predictions
json_path = os.path.join(findspark.find(), "temp_json_test")
json_file_path = os.path.join(json_path, "test" + str(int(time())))
predictions.coalesce(1).write.format('json').save(json_file_path)
schema = StructType() \
.add("prediction", StringType()) \
.add("model_path", StringType()) \
.add("source_name", StringType()) \
.add("individual", StringType()) \
.add("target_column", StringType()) \
.add("timestamp", IntegerType())
streamingDF = (spark.readStream.schema(schema).option(
"maxFilesPerTrigger", 6).json(json_file_path))
connection = writeToCassandra(streamingDF,
checkpoint=os.path.join(
"test_checkpoint",
"test" + str(int(time()))))
connection.awaitTermination(5)
cluster = Cluster(['127.0.0.1'], "9042")
session = cluster.connect("predictions")
session.row_factory = pandas_factory_fixture
session.default_fetch_size = None
query_count = "select count(*) from predictions.predictions where target_column = 'test_target'" \
" and timestamp = %s ALLOW FILTERING;"
query_count = query_count % timestamp
count = session.execute(query_count,
timeout=None)._current_rows.iloc[0]['count']
session.shutdown()
cluster.shutdown()
assert streamingDF.isStreaming is True
assert count > 0
def load_and_train(source):
plt = platform.system()
if plt == "Linux":
findspark.init("/home/smartcity/Downloads/spark-3.0.1-bin-hadoop2.7")
path = findspark.find()
path = os.path.join(path, 'models')
if source == "powietrze":
# Załadowanie tabeli powietrze z bazy danych master dataset
data_pow, sc_pow = data_for_ml.powietrze_manipulation.load_powietrze()
# Wytrenowanie modelu klsyfikacyjnego na wcześniej załadowanych danych
powietrze_path = os.path.join(path, 'powietrze_model')
powietrze_path = powietrze_path + '_' + str(int(time()))
spark_ml.classificator.Classification.make_class_model(
data_pow, sc_pow, powietrze_path, 'RF_pow', 'pm25')
elif source == "urzedy":
data_urz, sc_urz = data_for_ml.urzedy_manipulation.load_urzedy(
agg="moving_average")
urzedy_path = os.path.join(path, 'urzedy_model')
urzedy_path = urzedy_path + '_' + str(int(time()))
spark_ml.reggresor.Regression.make_regr_model(data_urz, sc_urz,
urzedy_path,
'RF_urz_mav',
"liczbaKlwKolejce")
elif source == "velib":
data_vel, sc_vel = data_for_ml.velib_manipulation.load_velib()
velib_path = os.path.join(path, 'velib_model')
velib_path = velib_path + '_' + str(int(time()))
spark_ml.reggresor.Regression.make_regr_model(data_vel, sc_vel,
velib_path, 'RF_vel',
'numbikesavailable')
#!/usr/bin/env python
# coding: utf-8
# Import libraries required to find pyspark installations on jupyter notebook
import findspark
findspark.init()
findspark.find()
import pyspark
# Import the required pyspark libraries that will help us explode the list of checkin dates for each business into individual rows
from pyspark.sql.functions import col, split
from pyspark.sql.functions import explode
# Import SparkSession from Pyspark
from pyspark.sql import SparkSession
import json
import csv
import re
import string
import pandas as pd
# Create spark object with the necessary configuration
spark = SparkSession.builder.appName('EDA').master('local').enableHiveSupport().getOrCreate()
# Read all the input files (stored on HDFS in JSON format) and create a spark dataframe on top of it
review = spark.read.json('hdfs://0.0.0.0:19000/yelp/review.json')
business = spark.read.json('hdfs://0.0.0.0:19000/yelp/business.json')
import findspark
from pyspark.sql import SparkSession
from pyspark.ml.regression import LinearRegression
from pyspark.sql import Row
from pyspark.sql.types import *
from pyspark.sql.functions import *
from pyspark.ml.linalg import DenseVector
from pyspark.ml.feature import StandardScaler
x = findspark.find()
print(x)
findspark.init("C:/spark/spark-2.3.0-bin-hadoop2.7")
spark = SparkSession.builder.master("local").appName(
"Linear Regression Model").config("spark.executor.memory",
"1gb").getOrCreate()
sc = spark.sparkContext
rdd = sc.textFile(
'C:/Users/Emad Ahmed/Desktop/CaliforniaHousing/cal_housing.data')
header = sc.textFile(
'C:/Users/Emad Ahmed/Desktop/CaliforniaHousing/cal_housing.domain')
header.collect()
rdd = rdd.map(lambda line: line.split(","))
# RDD -> DF
df = rdd.map(lambda line: Row(longitude=line[0],
latitude=line[1],
housingMedianAge=line[2],
totalRooms=line[3],
totalBedRooms=line[4],
import findspark
import os
import sys
findspark.init()
spark_home = findspark.find()
#spark_home = os.environ.get('SPARK_HOME', None)
sys.path.insert(0, spark_home + "/python")
# Add the py4j to the path.
# You may need to change the version number to match your install
sys.path.insert(0, os.path.join(spark_home, 'python/lib/py4j-0.8.2.1-src.zip'))
# Adding the library to mysql connector
packages = "mysql:mysql-connector-java:5.1.37"
os.environ["PYSPARK_SUBMIT_ARGS"] = "--packages {0} pyspark-shell".format(
packages
)
# Initialize PySpark to predefine the SparkContext variable 'sc'
execfile(os.path.join(spark_home, 'python/pyspark/shell.py'))
def start():
global __pythonManager, __gateway, __dependency_manager, __gmql_jar_path, __py4j_path
logger = logging.getLogger()
master = get_master()
if master.lower().startswith('local'):
logger.debug("Starting LOCAL backend (master: {})".format(
master.lower()))
java_home = os.environ.get("JAVA_HOME")
if java_home is None:
raise SystemError("The environment variable JAVA_HOME is not set")
java_path = os.path.join(java_home, "bin", "java")
_port = launch_gateway(classpath=__gmql_jar_path,
die_on_exit=True,
java_path=java_path,
javaopts=get_local_java_options(),
jarpath=__py4j_path)
__gateway = JavaGateway(gateway_parameters=GatewayParameters(
port=_port, auto_convert=True))
python_api_package = get_python_api_package(__gateway)
__pythonManager = start_gmql_manager(python_api_package)
conf = get_configuration()
conf.set_master(master.lower())
_set_spark_configuration(conf)
_set_system_configuration(conf)
else:
# use spark-submit
logger.debug("Submitting backend to {}".format(master))
master = re.sub("^spark_", "", master.lower())
configs = get_spark_configs()
spark_location = find()
logger.debug("Found spark at location: {}".format(spark_location))
command = [
os.path.join(spark_location, 'bin', 'spark-submit'), '--master',
master, '--deploy-mode', "client"
]
for cname, c in configs.items():
command.extend(['--conf', '{}={}'.format(cname, c)])
command.append(__gmql_jar_path)
stderr = open(os.devnull, "w")
proc = Popen(command, stdout=PIPE, stdin=PIPE, stderr=stderr)
while True:
try:
_port = int(proc.stdout.readline())
break
except ValueError:
pass
logger.debug("Backend listening at port {}".format(_port))
redirect_stdout = open(os.devnull, "w")
OutputConsumer(redirect_stdout, proc.stdout, daemon=True).start()
ProcessConsumer(proc, [redirect_stdout], daemon=True).start()
quiet_close(stderr)
__gateway = JavaGateway(gateway_parameters=GatewayParameters(
port=_port, auto_convert=True))
pm = __gateway.entry_point.getPythonManager()
pm.startEngine()
__pythonManager = pm
sql_query = 'select * from db_pruebas..Consumer_Complaints_2'
df = sql_class.select_to_df(sql_query)
print(df.head())
print(df.columns)
###USING SPARK
from pyspark import SparkContext, SparkConf, SQLContext
ruta_json = 'spark_entornos.json'
spark_version = 'spark-2.4.4'
set_enviroment(ruta_json, spark_version)
import findspark
findspark.init()
findspark.find()
import pyspark
print(findspark.find())
appName = "PySpark SQL Server Example - via ODBC"
master = "local"
conf = SparkConf() \
.setAppName(appName) \
.setMaster(master)
sc = SparkContext(conf=conf)
sqlContext = SQLContext(sc)
spark = sqlContext.sparkSession
sparkDF = spark.createDataFrame(df)
sparkDF.show()
import findspark
import annealing_spark
import numpy as np
import matplotlib.pyplot as plt
import networkx as nx
import json
from networkx.readwrite import json_graph
findspark.find()
findspark.init('/usr/local/opt/apache-spark/libexec')
import pyspark
import influence_function
sc = pyspark.SparkContext()
with open("graph/nc_mini.json", "r") as graph_data:
graph_data = json.load(graph_data)
NC_digraph = json_graph.node_link_graph(graph_data)
nodes_set = NC_digraph.nodes()
######################################################################################
#
#Greedy Algorithm Implementation
#
######################################################################################
def getMaxGreedy_2(nodes_set, N, curr_nodes):
result = []
max_node = None
max_influence = 0
for i in nodes_set:
import findspark
import os
import sys
findspark.init()
spark_home = findspark.find()
#spark_home = os.environ.get('SPARK_HOME', None)
sys.path.insert(0, spark_home + "/python")
# Add the py4j to the path.
# You may need to change the version number to match your install
sys.path.insert(0, os.path.join(spark_home, 'python/lib/py4j-0.8.2.1-src.zip'))
# Adding the library to mysql connector
packages = "mysql:mysql-connector-java:5.1.37"
os.environ["PYSPARK_SUBMIT_ARGS"] = "--packages {0} pyspark-shell".format(
packages)
# Initialize PySpark to predefine the SparkContext variable 'sc'
execfile(os.path.join(spark_home, 'python/pyspark/shell.py'))
