[BEAM-627] Set Spark master only if not set.

• Type: Bug
• Status: Resolved
• Priority: P2
• Resolution: Fixed
• Fix Version/s: 0.3.0-incubating
• Component/s: runner-spark
• Assignee: Amit Sela
• Reporter: Amit Sela
• Created: 12/Sep/16 08:00
• Updated: 16/May/20 13:54
• Resolved: 12/Sep/16 08:51

Description

Currently, the Spark master is always set programatically.
This is an issue if the master was already set by passing a system property (which is what spark-submit basically does).

Avoiding overrides allows for an application to define a "local" master, while overriding it with an external resource manager.

Issue Links

• links to: GitHub Pull Request #944