Create a gist now

Instantly share code, notes, and snippets.

What would you like to do?
To enable IDE (PyCharm) syntax support for Apache Spark, adopted from http://www.abisen.com/spark-from-ipython-notebook.html
#!/public/spark-0.9.1/bin/pyspark
import os
import sys
# Set the path for spark installation
# this is the path where you have built spark using sbt/sbt assembly
os.environ['SPARK_HOME'] = "/public/spark-0.9.1"
# os.environ['SPARK_HOME'] = "/home/jie/d2/spark-0.9.1"
# Append to PYTHONPATH so that pyspark could be found
sys.path.append("/public/spark-0.9.1/python")
# sys.path.append("/home/jie/d2/spark-0.9.1/python")
# Now we are ready to import Spark Modules
try:
from pyspark import SparkContext
from pyspark import SparkConf
except ImportError as e:
print ("Error importing Spark Modules", e)
sys.exit(1)
import numpy as np
from sklearn.cross_validation import train_test_split, Bootstrap
from sklearn.datasets import make_classification
from sklearn.metrics import accuracy_score
from sklearn.tree import DecisionTreeClassifier
from sklearn import datasets, svm, pipeline
from sklearn.kernel_approximation import RBFSampler
from sklearn.linear_model import SGDClassifier
if __name__ =='__main__':
conf=SparkConf()
conf.setMaster("spark://172.18.109.87:7077")
# conf.setMaster("local")
conf.setAppName("spark_svm")
conf.set("spark.executor.memory", "12g")
sc = SparkContext(conf=conf)
X, y = make_classification(n_samples=10000, n_features=30, n_classes=2)
X_train, X_test, y_train, y_test = train_test_split(X, y)
samples = sc.parallelize(Bootstrap(y.size))
feature_map_fourier = RBFSampler(gamma=.2, random_state=1)
fourier_approx_svm = pipeline.Pipeline([("feature_map", feature_map_fourier),
("svm", SGDClassifier())])
fourier_approx_svm.set_params(feature_map__n_components=700)
results = samples.map(lambda (index, _):
fourier_approx_svm.fit(X[index], y[index]).score(X_test, y_test)) \
.reduce(lambda x,y: x+y)
final_results = results/ len(Bootstrap(y.size))
print(final_results)

I get a child_exception = [Errno 2] No such file or directory and setting shell = True does not solve the problem http://stackoverflow.com/questions/901982/python-oserror-errno-2

@attilacsordas I'm getting this error also in my own scripts. Have you tried with newer versions of Spark? I get this in 1.4.0.

I have a better way:

  • Create a new Python virtual environment:
  • Go to PyCharm -> Preferences -> Project:
  • On the “Project Interpreter” Line, create a new virtual environment (Click on the gear icon on the right)
  • Once the virtual environment is created, go to the same menu, click “More” and see a list of all project interpreters. Make sure your virtual environment is selected
  • Click “Show paths for the selected interpreter” button at the bottom
  • On the next dialog click on the “+” icon to add paths. You will need to add SPARK_HOME/python and SPARK_HOME/python/lib/py4j-0.8.2.1-src.zip

This should set you up to run and debug.

@ghost

ghost commented Jul 31, 2015

@riturajtiwari, thanks your solution is the best so far. Thanks for sharing.
By the way, I am not able to connect to my remote server.
The code is
import os
import sys
try:
from pyspark import SparkContext
from pyspark import SparkConf
print ("Pyspark sucess")
except ImportError as e:
print ("Error importing Spark Modules", e)
sys.exit(1)

try:
#if name =='main':
conf=SparkConf()
conf.setMaster("spark://10.228.200.251:7077")
print ("connection suceeded with Master")
except:
print("Connection not established")
sys.exit(1)
When i run this code, I get the following error
Pyspark sucess
The system cannot find the path specified.
Connection not established

Process finished with exit code 1
Any pointers to resolve this would be appreciated.
Thank you

nuTTeLLo commented Sep 2, 2015

@matsya: The path specified error usually occurs when you did not set the 'SPARK_HOME' environment variable properly and you try instantiating the SparkConf(). You should set that to where your remote server spark installation is located.

os.environ['SPARK_HOME'='/usr/spark_installation'

Hi folks.

I am able to import SparkContext, but when I try to set it to 'sc', I am getting the following error:

WindowsError: [Error 2] The system cannot find the file specified. It has got something to do with the subprocess.py file in the new environment's lib directory.

Sorry if what I am asking is too trivial, I am not a computer scientist.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment