Question
How do I pass external parameters through Spark Submit?
--conf key=value or --properties-file file.properties
Answer
Spark Submit is a command-line interface used to submit applications to a Spark cluster. It allows you to pass configurations, such as external parameters that can modify the behavior of your Spark job. Here’s how you can effectively pass those parameters.
spark-submit --conf spark.executor.memory=2g --conf spark.driver.memory=1g --properties-file my-spark-conf.properties my-app.jar
Causes
- Need to customize Spark job behavior based on external config values.
- Streamlining different executions without hardcoding values.
Solutions
- Use the `--conf` option followed by your key-value pairs to pass configurations directly in the command line.
- Utilize `--properties-file` to specify a file containing properties that Spark will read upon execution.
Common Mistakes
Mistake: Not enclosing complex values (like JSON strings) in quotes.
Solution: Always wrap complex or multi-part strings in quotes to avoid parsing errors.
Mistake: Confusing `--conf` with individual flags (like `--executor-memory`).
Solution: Use the correct syntax: `--conf key=value` to avoid overriding default settings.
Helpers
- Spark Submit parameters
- Pass parameters Spark
- Spark Submit configuration
- Spark application parameters
