Jeff Evans created SPARK-29070:
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Summary: Allow SparkLauncher to return full spark-submit command
line
Key: SPARK-29070
URL: https://issues.apache.org/jira/browse/SPARK-29070
Project: Spark
Issue Type: Improvement
Components: Spark Submit
Affects Versions: 2.4.5
Reporter: Jeff Evans
{{org.apache.spark.launcher.SparkLauncher}} wraps a {{ProcessBuilder}}, and
builds up a full command line to {{spark-submit}} using a builder pattern.
When {{startApplication}} is finally called, a
In scenarios where another application is submitting to Spark, it would be
extremely useful from a support and debugging standpoint to be able to see the
full {{spark-submit}} command that is actually used (so that the same
submission can be tested standalone, arguments tweaked, etc.). Currently, the
only way this gets captured is to {{stderr}} if the
{{SPARK_PRINT_LAUNCH_COMMAND}} environment variable is set. This is cumbersome
in the context of an application that is wrapping Spark and already using the
APIs.
I propose simply adding a getter method to {{SparkSubmit}} that allows clients
to retrieve what the full command line will be, so they can log this however
they wish (or do anything else with it).
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