org.apache.spark.scheduler.cluster

SchedulerExtensionService

trait SchedulerExtensionService extends AnyRef

An extension service that can be loaded into a Spark YARN scheduler. A Service that can be started and stopped.

1. For implementations to be loadable by SchedulerExtensionServices, they must provide an empty constructor. 2. The stop() operation MUST be idempotent, and succeed even if start() was never invoked.

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  1. abstract def start(binding: SchedulerExtensionServiceBinding): Unit

    Start the extension service.

    Start the extension service. This should be a no-op if called more than once.

    binding

    binding to the spark application and YARN

  2. abstract def stop(): Unit

    Stop the service The stop() operation MUST be idempotent, and succeed even if start() was never invoked.

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