ExecutorBackend¶

ExecutorBackend is an abstraction of executor backends (that TaskRunners use to report task status updates to a scheduler).

ExecutorBackend acts as a bridge between executors and the driver.

Contract¶

Reporting Task Status¶

statusUpdate(
  taskId: Long,
  state: TaskState,
  data: ByteBuffer): Unit

Reports task status of the given task to a scheduler

See:

• CoarseGrainedExecutorBackend

Used when:

• TaskRunner is requested to run a task

Implementations¶

• CoarseGrainedExecutorBackend
• LocalSchedulerBackend
• MesosExecutorBackend