Github user lianhuiwang commented on a diff in the pull request: https://github.com/apache/spark/pull/4141#discussion_r24241097 --- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala --- @@ -124,10 +123,12 @@ private[yarn] class YarnAllocator( amClient.getMatchingRequests(RM_REQUEST_PRIORITY, location, resource).map(_.size).sum /** - * Request as many executors from the ResourceManager as needed to reach the desired total. + * Request as many executors from the ResourceManager as needed to reach the desired total. If + * the requested total is smaller than the current number of running executors, no executors will + * be killed. --- End diff -- yes,amClient.removeContainerRequest is only to remove requests, not allocated containers.
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