Github user KaiXinXiaoLei commented on a diff in the pull request: https://github.com/apache/spark/pull/8945#discussion_r41752408 --- Diff: core/src/test/scala/org/apache/spark/deploy/StandaloneDynamicAllocationSuite.scala --- @@ -369,6 +369,38 @@ class StandaloneDynamicAllocationSuite assert(apps.head.getExecutorLimit === 1) } + test("the pending replacement executors should not be lost (SPARK-10515)") { + sc = new SparkContext(appConf) + val appId = sc.applicationId + eventually(timeout(10.seconds), interval(10.millis)) { + val apps = getApplications() + assert(apps.size === 1) + assert(apps.head.id === appId) + assert(apps.head.executors.size === 2) + assert(apps.head.getExecutorLimit === Int.MaxValue) + } + // sync executors between the Master and the driver, needed because + // the driver refuses to kill executors it does not know about + syncExecutors(sc) + val executors = getExecutorIds(sc) + assert(executors.size === 2) + + // kill executor 1, and replace it + assert(sc.killAndReplaceExecutor(executors.head)) + var apps = getApplications() + assert(apps.head.executors.size === 2) --- End diff -- @vanzin ``` assert(sc.killAndReplaceExecutor(executors.head)) var apps = getApplications() assert(apps.head.executors.size === 2) ``` I want to say, kill a executor and a new executor should replaces it. The total number of executor should be not changed.
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