Python Worker Failed to Connect Back

Python worker failed to connect back

I got the same error. I solved it installing the previous version of Spark (2.3 instead of 2.4). Now it works perfectly, maybe it is an issue of the lastest version of pyspark.

SparkException: Python worker failed to connect back when execute spark action

I just configure the following variables environment and now it's working normally:

• HADOOP_HOME = C:\Hadoop
• JAVA_HOME = C:\Java\jdk-11.0.6
• PYSPARK_DRIVER_PYTHON = jupyter
• PYSPARK_DRIVER_PYTHON_OPTS = notebook
• PYSPARK_PYTHON = python

Actually I´m using the following versions:

Python 3.7.3, Java JDK 11.0.6, Windows 10, Apache Spark 2.4.3 and using Jupyter Notebook with pyspark.

Errors while trying to use collect() method in pyspark. (Windows 10)

BIG thanks to @blackbishop for the tip!

Python worker failed to connect back

All I did is just added

import findspark
findspark.init()

Everything works now!

SparkException: Python worker did not connect back in time

So this happens when the python worker process fails to connect to the spark executor JVM. Spark uses sockets to communicate with the worker process. There are a large number of reasons why this could happen, and the exact specific details will likely be in the logs on the executor/worker machines.

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