Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/18651#discussion_r128834971
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala
---
@@ -525,9 +534,11 @@ private[yarn] class YarnAllocator(
} catch {
case NonFatal(e) =>
logError(s"Failed to launch executor $executorId on
container $containerId", e)
- // Assigned container should be released immediately to
avoid unnecessary resource
- // occupation.
+ // Assigned container should be released immediately
+ // to avoid unnecessary resource occupation.
amClient.releaseAssignedContainer(containerId)
+ } finally {
+ numExecutorsStarting.decrementAndGet()
--- End diff --
Ok, I see. The current code can double count the same executor as starting
and running, while the previous code could count it as starting even though it
failed to start (for a really small window), but that is a self-healing
situation while the previous can have some adverse effects.
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