Github user jerryshao commented on a diff in the pull request:
https://github.com/apache/spark/pull/6394#discussion_r31989882
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala ---
@@ -225,12 +243,74 @@ private[yarn] class YarnAllocator(
logInfo(s"Will request $missing executor containers, each with
${resource.getVirtualCores} " +
s"cores and ${resource.getMemory} MB memory including
$memoryOverhead MB overhead")
- for (i <- 0 until missing) {
- val request = createContainerRequest(resource)
- amClient.addContainerRequest(request)
- val nodes = request.getNodes
- val hostStr = if (nodes == null || nodes.isEmpty) "Any" else
nodes.last
- logInfo(s"Container request (host: $hostStr, capability:
$resource)")
+ // Calculated the number of executors we expected to satisfy all the
preferred locality tasks
--- End diff --
Yes, that's indeed a issue, I will carefully consider it.
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