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[Solved] ERROR: Unable to find py4j, your SPARK_HOME may not be configured correctly

Hello Guys, How are you all? Hope You all Are Fine. Today I get the following error ERROR: Unable to find py4j, your SPARK_HOME may not be configured correctly in Python. So Here I am Explain to you all the possible solutions here.

Without wasting your time, Let’s start This Article to Solve This Error.

How To Solve ERROR: Unable to find py4j, your SPARK_HOME may not be configured correctly Error ?

  1. How To Solve ERROR: Unable to find py4j, your SPARK_HOME may not be configured correctly Error ?

    To Solve ERROR: Unable to find py4j, your SPARK_HOME may not be configured correctly Error The first thing the code does is specify that a variable spark_python is your SPARK_HOME path followed by /python.

  2. ERROR: Unable to find py4j, your SPARK_HOME may not be configured correctly

    To Solve ERROR: Unable to find py4j, your SPARK_HOME may not be configured correctly Error The first thing the code does is specify that a variable spark_python is your SPARK_HOME path followed by /python.

Solution 1

Check if the spark version you installed is the same that you declare under SPARK_HOME name

For example (in Google Colab), I’ve installed:

!wget -q https://downloads.apache.org/spark/spark-3.0.1/spark-3.0.1-bin-hadoop3.2.tgz

and then I declare:

os.environ["SPARK_HOME"] = "/content/spark-3.0.1-bin-hadoop3.2"

Look that spark-3.0.1-bin-hadoop3.2 must be same in both places

Solution 2

The error message is suggesting that findinit is having trouble locating your SPARK_HOME directory.

I had a look through the source code for findinit and it’s a pretty straightforward error.

Background

The first thing the code does is specify that a variable spark_python is your SPARK_HOME path followed by /python.

Next the code is looking for the py4j path using the glob module, which finds all the pathnames matching the pattern os.path.join(spark_python,"lib","py4j-*.zip") which in your case should equate to /home/ubuntu/spark-3.0.0-bin-hadoop3.2/python/lib/py4j-0.10.7-src.zip (I made up the py4j version number based on mine, so you yours might be slightly different). Now, it gets the py4j path from the list returned by the glob operation by selecting the first element. This is why the error is an IndexError, and it happens when the py4j path doesn’t exist, which itself only relies on SPARK_HOME being properly specified.

To solve the problem

The only culprit would be the specification of SPARK_HOME, which as you’ve said, is read into the environment variables from the ~/.bashrc file. So the three things to check are:

  1. That your SPARK_HOME path is correct (check it exists)
  2. That you have a py4j .zip file in /home/ubuntu/spark-3.0.0-bin-hadoop3.2/python/lib/
  3. That there aren’t any formatting problems in the SPARK_HOME path specification in the ~/.bashrc file

I use quotes around my exported paths e.g. export SPARK_HOME="/home/ubuntu/spark-3.0.0-bin-hadoop3.2" but I’m not sure if that makes a difference.

Summery

It’s all About this issue. Hope all solution helped you a lot. Comment below Your thoughts and your queries. Also, Comment below which solution worked for you? Thank You.

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