attilapiros commented on a change in pull request #35172:
URL: https://github.com/apache/spark/pull/35172#discussion_r804315807
##########
File path:
core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala
##########
@@ -260,9 +266,27 @@ class CoarseGrainedSchedulerBackend(scheduler:
TaskSchedulerImpl, val rpcEnv: Rp
.resourceProfileFromId(resourceProfileId).getNumSlotsPerAddress(rName, conf)
(info.name, new ExecutorResourceInfo(info.name, info.addresses,
numParts))
}
+ // If we've requested the executor figure out when we did.
+ val reqTs: Option[Long] =
CoarseGrainedSchedulerBackend.this.synchronized {
+ execRequestTimes.get(resourceProfileId).flatMap {
+ times =>
+ times.headOption.map {
+ h =>
+ // Take off the top element
+ times.dequeue()
+ // If we requested more than one exec reduce the req count by
1 and prepend it back
+ if (h._1 > 1) {
+ ((h._1 - 1, h._2)) +=: times
Review comment:
My bad I mixed the operators, now I see:
```scala
scala> import scala.collection.mutable.Queue
import scala.collection.mutable.Queue
scala> val times = Queue[(Int, Int)]()
times: scala.collection.mutable.Queue[(Int, Int)] = Queue()
scala> times += 2 -> 1
res1: times.type = Queue((2,1))
scala> times += 2 -> 2
res2: times.type = Queue((2,1), (2,2))
scala> times += 2 -> 3
res3: times.type = Queue((2,1), (2,2), (2,3))
scala> times.dequeue()
res4: (Int, Int) = (2,1)
scala> (1 -> 1) +=: times
res5: times.type = Queue((1,1), (2,2), (2,3))
```
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