Github user lianhuiwang commented on a diff in the pull request:
https://github.com/apache/spark/pull/3245#discussion_r20504747
--- Diff:
yarn/stable/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocationHandler.scala
---
@@ -43,10 +44,20 @@ private[yarn] class YarnAllocationHandler(
securityMgr: SecurityManager)
extends YarnAllocator(conf, sparkConf, appAttemptId, args,
preferredNodes, securityMgr) {
+
+ // ContainerRequests which have been added to AMRMClient.
+ private val containerRequestList = new
LinkedBlockingQueue[ContainerRequest]()
+
override protected def releaseContainer(container: Container) = {
amClient.releaseAssignedContainer(container.getId())
}
+ override protected def removeContainerRequest() = {
+ if(!containerRequestList.isEmpty()){
+ amClient.removeContainerRequest(containerRequestList.take())
--- End diff --
i donot think so. because it is FIFO, we can remove head of request queue
because head of queue is allocated by Yarn when we receive allocated Containers.
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