> For the complete documentation index, see [llms.txt](https://zjffdu.gitbook.io/spark-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zjffdu.gitbook.io/spark-notes/chapter1.md).

# Start Spark

\=======

## sbin/start-master.sh

bin/start-master.sh --> bin/spark-daemon.sh --> bin/spark-class org.apache.spark.deploy.master.Master

## bin/spark-shell

bin/spark-shell --> bin/spark-submit --class org.apache.spark.repl.Main --name "Spark shell" --> bin/spark-class org.apache.spark.deploy.SparkSubmit --class org.apache.spark.repl.Main --name "Spark shell" --> java org.apache.spark.launcher.Main org.apache.spark.deploy.SparkSubmit --class org.apache.spark.repl.Main --name "Spark shell"

## bin/spark-submit

bin/spark-submit --> bin/spark-class org.apache.spark.deploy.SparkSubmit --> java org.apache.spark.launcher.Main

* SparkClassCommandBuilder
* SparkSubmitCommandBuilder

org.apache.spark.launcher.Main build the commands to run and then exit the process. spark-class will use the commands to launch another process using the commands

```
done < <("$RUNNER" -cp "$LAUNCH_CLASSPATH" org.apache.spark.launcher.Main "$@")
exec "${CMD[@]}
```

## Tips for how to get the launcher details

* export SPARK\_PRINT\_LAUNCH\_COMMAND=true
* bin/spark-shell --verbose