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Pyspark + PyCharm - java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST

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Pyspark + PyCharm - java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST

Expert Contributor

Hello

- i'm using PyCharm 2019, python 2.7.6, Apache Spark 2.2.0

for pyspark development, and running into issues when i try to run any spark code.


Code :

#! /bin/python

import os
import sys
from pyspark.sql import SparkSession
from pyspark import SparkConf, SparkContext
import pandas as pd
import numpy as np
import pyarrow.parquet as pq
import pyarrow as pa
import pprint as pp
from pyspark.sql.functions import col, lit

import datetime


today = datetime.date.today().__format__("yyyymmdd")

print (" formatted date => " + today)

# d = {'a':1, 'b':2, 'c':3}

d = [(1, "20190101", "99990101", "false"), (2, "20190501", "99990101", "false"), (3, "20190101", "20190414", "false"), (3, "20190415", "99990101", "false")]

print(os.environ)
print(" spark_home -> ", os.environ['SPARK_HOME'])
print(" pythonpath -> ", os.environ['PYTHONPATH'])
print(" PYSPARK_SUBMIT_ARGS -> ", os.environ['PYSPARK_SUBMIT_ARGS'])

os.environ['PYSPARK_SUBMIT_ARGS'] = "--master spark://Karans-MacBook-Pro-4.local:7077 pyspark-shell"

print(" JAVA_HOME => " + os.environ['JAVA_HOME'])
print(" PATH => " + os.environ['PATH'])
print(" CLASSPATH => " + os.environ['CLASSPATH'])

sys.path.append(os.path.join(os.environ['SPARK_HOME'], "python"))
sys.path.append(os.path.join(os.environ['SPARK_HOME'], "python/lib/py4j-0.10.4-src.zip"))

# ERROR OBTAINED WHEN I CREATE SaprkSession object
spark = SparkSession.builder.master("local").appName("CreatingDF").getOrCreate()
sparkdf = spark.createDataFrame(d, ['pnalt', 'begda', 'endda', 'ref_flag'])
print(sparkdf)



ERROR (when i create the SparkSession object)

19/05/15 16:58:06 ERROR SparkUncaughtExceptionHandler: Uncaught exception in thread Thread[main,5,main]
java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST
    at scala.collection.MapLike$class.default(MapLike.scala:228)
    at scala.collection.AbstractMap.default(Map.scala:59)
    at scala.collection.MapLike$class.apply(MapLike.scala:141)
    at scala.collection.AbstractMap.apply(Map.scala:59)
    at org.apache.spark.api.python.PythonGatewayServer$$anonfun$main$1.apply$mcV$sp(PythonGatewayServer.scala:50)
    at org.apache.spark.util.Utils$.tryOrExit(Utils.scala:1262)
    at org.apache.spark.api.python.PythonGatewayServer$.main(PythonGatewayServer.scala:37)
    at org.apache.spark.api.python.PythonGatewayServer.main(PythonGatewayServer.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:755)
    at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:180)
    at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:205)
    at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:119)
    at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Traceback (most recent call last):
  File "/Users/karanalang/PycharmProjects/Python2/karan/python2/falcon/py_createDF.py", line 55, in <module>
    spark = SparkSession.builder.master("local").appName("CreatingDF").getOrCreate()
  File "/Users/karanalang/PycharmProjects/Python2/venv/lib/python2.7/site-packages/pyspark/sql/session.py", line 173, in getOrCreate
    sc = SparkContext.getOrCreate(sparkConf)
  File "/Users/karanalang/PycharmProjects/Python2/venv/lib/python2.7/site-packages/pyspark/context.py", line 367, in getOrCreate
    SparkContext(conf=conf or SparkConf())
  File "/Users/karanalang/PycharmProjects/Python2/venv/lib/python2.7/site-packages/pyspark/context.py", line 133, in __init__
    SparkContext._ensure_initialized(self, gateway=gateway, conf=conf)
  File "/Users/karanalang/PycharmProjects/Python2/venv/lib/python2.7/site-packages/pyspark/context.py", line 316, in _ensure_initialized
    SparkContext._gateway = gateway or launch_gateway(conf)
  File "/Users/karanalang/PycharmProjects/Python2/venv/lib/python2.7/site-packages/pyspark/java_gateway.py", line 46, in launch_gateway
    return _launch_gateway(conf)
  File "/Users/karanalang/PycharmProjects/Python2/venv/lib/python2.7/site-packages/pyspark/java_gateway.py", line 108, in _launch_gateway
    raise Exception("Java gateway process exited before sending its port number")
Exception: Java gateway process exited before sending its port number


forums on internet seem to be suggesting that it is a version related issue, however, i'm not sure how to debug/fix this issue.

Any help on this is really appreciated.

Attaching screenshot of the Pycharm Project interpretor as well.


108742-screen-shot-2019-05-15-at-44802-pm.png


5 REPLIES 5

Re: Pyspark + PyCharm - java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST

Expert Contributor

hi @saichand akella - any ideas on this ?

Re: Pyspark + PyCharm - java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST

Expert Contributor

@Ravi Kumar Lanke, @saichand akella - any ideas on this ?

Re: Pyspark + PyCharm - java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST

New Contributor

It may be a version compatibility issue

Re: Pyspark + PyCharm - java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST

Expert Contributor

@Ravi Kumar Lanke , thanks for the response

- when i run the same code on command-line, it works fine. When i run this on PyCharm, it is failing.

$PATH, $JAVA_HOME, $SPARK_HOME, $PYTHON_PATH on command line & PyCharm is the same,

I've tried setting it manually as well


On PySpark Command Line :

>>> os.environ['PATH']'
/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/local/bin/scala/bin:/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/bin:/Users/karanalang/Documents/Technology/kafka/kafka_2.11-0.9.0.1/bin:/Users/karanalang/Documents/Technology/maven/apache-maven-3.3.9//bin:/bin:/Users/karanalang/Documents/Technology/Storm/zookeeper/zookeeper-3.4.8/bin:/Users/karanalang/Documents/Technology/kafka/confluent-3.2.2/bin:/usr/local/etc/:/Users/karanalang/Documents/Technology/kafka/confluent-3.2.2/bin:/Users/karanalang/Documents/Technology/Gradle/gradle-4.3.1/bin:/Users/karanalang/Documents/Technology/HadoopInstallation-local/hadoop-2.6.5/bin:/Users/karanalang/Documents/Technology/HadoopInstallation-local/hadoop-2.6.5/sbin'
>>> os.environ['JAVA_HOME']
'/Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/
>>> os.environ['SPARK_HOME']
'/Users/karanalang/Documents/Technology/IncortaAnalytics/spark'
>>> os.environ['PYTHONPATH']
'/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/python/lib/py4j-0.10.4-src.zip:/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/python/:/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/python/lib/py4j-0.10.4-src.zip:/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/python/:'

On PyCharm :

(' spark_home -> ', '/Users/karanalang/Documents/Technology/IncortaAnalytics/spark
JAVA_HOME => /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/
PATH => /Users/karanalang/PycharmProjects/Python2/venv/bin:/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/local/bin/scala/bin:/Users/karanalang/Documents/Technology/Hive/apache-hive-3.1.0-bin/bin:/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/bin:/Users/karanalang/Documents/Technology/kafka/kafka_2.11-0.9.0.1/bin:/Users/karanalang/Documents/Technology/maven/apache-maven-3.3.9//bin:/bin:/Users/karanalang/Documents/Technology/Storm/zookeeper/zookeeper-3.4.8/bin:/Users/karanalang/Documents/Technology/kafka/confluent-3.2.2/bin:/usr/local/etc/:/Users/karanalang/Documents/Technology/kafka/confluent-3.2.2/bin:/Users/karanalang/Documents/Technology/Gradle/gradle-4.3.1/bin:/Users/karanalang/Documents/Technology/HadoopInstallation-local/hadoop-2.6.5/bin:/Users/karanalang/Documents/Technology/HadoopInstallation-local/hadoop-2.6.5/sbin
PYTHONPATH -> /Users/karanalang/Documents/Technology/IncortaAnalytics/spark/python/lib/py4j-0.10.4-src.zip:/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/python/:/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/python/lib/py4j-0.10.4-src.zip:/Users/karanalang/Documents/Technology/IncortaAnalytics/spark/python/:

On PyCharm (based on similar issues on SO & other forums),

i've tried setting PYSPARK_SUBMIT_ARGS, but it doesnt seems to be working

os.environ['PYSPARK_SUBMIT_ARGS'] = "--master spark://Karans-MacBook-Pro-4.local:7077 pyspark-shell"


Any input on which version might be a mismatch ? or what the root cause might be ?

Re: Pyspark + PyCharm - java.util.NoSuchElementException: key not found: _PYSPARK_DRIVER_CALLBACK_HOST

Community Manager

The above question and the entire thread below was originally posted in the Community Help track. On Sun May 19 18:43 UTC 2019, a member of the HCC moderation staff moved it to the Data Science & Advanced Analytics Track. The Community Help Track is intended for questions about using the HCC site itself.

Bill Brooks, Community Manager
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