Ngone51 commented on a change in pull request #29817:
URL: https://github.com/apache/spark/pull/29817#discussion_r494003752
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File path: core/src/main/scala/org/apache/spark/deploy/DeployMessage.scala
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@@ -61,13 +61,34 @@ private[deploy] object DeployMessages {
}
/**
+ * An internal message that used by Master itself, in order to handle the
+ * `DecommissionWorkersOnHosts` request from `MasterWebUI` asynchronously.
+ * @param ids A collection of Worker ids, which should be decommissioned.
+ */
+ case class DecommissionWorkers(ids: Seq[String]) extends DeployMessage
+
+ /**
+ * A message that sent from Master to Worker to decommission the Worker.
+ * It's used for the case where decommission is triggered at MasterWebUI.
+ *
+ * Note that decommission a Worker will cause all the executors on that
Worker
+ * to be decommissioned as well.
+ */
+ object DecommissionWorker extends DeployMessage
+
+ /**
+ * A message that sent to the Worker itself when it receives PWR signal,
Review comment:
yeah
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