Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7385#discussion_r34754240
--- Diff: core/src/main/scala/org/apache/spark/FutureAction.scala ---
@@ -116,55 +123,27 @@ class SimpleFutureAction[T] private[spark](jobWaiter:
JobWaiter[_], resultFunc:
}
override def ready(atMost: Duration)(implicit permit: CanAwait):
SimpleFutureAction.this.type = {
- if (!atMost.isFinite()) {
- awaitResult()
- } else jobWaiter.synchronized {
- val finishTime = System.currentTimeMillis() + atMost.toMillis
- while (!isCompleted) {
- val time = System.currentTimeMillis()
- if (time >= finishTime) {
- throw new TimeoutException
- } else {
- jobWaiter.wait(finishTime - time)
- }
- }
- }
+ jobWaiter.ready(atMost)(permit)
this
}
@throws(classOf[Exception])
override def result(atMost: Duration)(implicit permit: CanAwait): T = {
- ready(atMost)(permit)
- awaitResult() match {
- case scala.util.Success(res) => res
- case scala.util.Failure(e) => throw e
- }
+ jobWaiter.result(atMost)(permit) // Throws exception if the job failed.
--- End diff --
what thread does this use? does it use some implicit thread pool?
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