benrich
New Contributor II

To start a SparkSession outside of a Jupyter Notebook and enable its use in multiple Python modules, follow these steps:

  1. Install Apache Spark: Ensure Spark is installed on your system. You can download it from the Apache Spark website  and set it up with Hadoop or use a standalone cluster.

  2. Set Up Environment Variables: Configure the necessary environment variables (SPARK_HOME, JAVA_HOME, and PYTHONPATH) to point to the correct locations.

  3. Create a Spark Configuration Module: Create a Python file (e.g., spark_config.py) to set up the SparkSession:

    python
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    from pyspark.sql import SparkSession def create_spark_session(app_name="MyApp"😞 spark = SparkSession.builder \ .appName(app_name) \ .getOrCreate() return spark
  4. Initialize SparkSession in Your Modules: Import and use the create_spark_session function in your Python modules to get the SparkSession:

    python
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    from spark_config import create_spark_session spark = create_spark_session("ModuleName") # Now you can use Spark functionality, e.g.: df = spark.read.csv("path/to/data.csv") df.show()
  5. Run Your Modules: Execute your Python scripts or modules from the command line or within a larger application, and the Spark session will be initialized and used as needed.

benrich