Github user janewangfb commented on a diff in the pull request:
https://github.com/apache/spark/pull/18492#discussion_r134334889
--- Diff:
core/src/test/scala/org/apache/spark/ExecutorAllocationManagerSuite.scala ---
@@ -188,6 +188,40 @@ class ExecutorAllocationManagerSuite
assert(numExecutorsTarget(manager) === 10)
}
+ test("add executors when speculative tasks added") {
+ sc = createSparkContext(0, 10, 0)
+ val manager = sc.executorAllocationManager.get
+
+ // Verify that we're capped at number of tasks including the
speculative ones in the stage
+ sc.listenerBus.postToAll(SparkListenerSpeculativeTaskSubmitted(1))
--- End diff --
That is not likely. Speculative job is only submitted when certain
percentage of jobs have finished successfully.
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