holdenk commented on a change in pull request #28818:
URL: https://github.com/apache/spark/pull/28818#discussion_r458391164
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File path: core/src/main/scala/org/apache/spark/ExecutorAllocationClient.scala
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@@ -81,6 +81,35 @@ private[spark] trait ExecutorAllocationClient {
countFailures: Boolean,
force: Boolean = false): Seq[String]
+ /**
+ * Request that the cluster manager decommission the specified executors.
+ * Default implementation delegates to kill, scheduler must override
+ * if it supports graceful decommissioning.
+ *
+ * @param executorIds identifiers of executors to decommission
+ * @param adjustTargetNumExecutors whether the target number of executors
will be adjusted down
+ * after these executors have been
decommissioned.
+ * @return the ids of the executors acknowledged by the cluster manager to
be removed.
+ */
+ def decommissionExecutors(
+ executorIds: Seq[String],
+ adjustTargetNumExecutors: Boolean): Seq[String]
+
+
+ /**
+ * Request that the cluster manager decommission the specified executors.
+ * Default implementation delegates to kill, scheduler must override
+ * if it supports graceful decommissioning.
+ *
+ * @param executorIds identifiers of executors to decommission
+ * @return whether the request is acknowledged by the cluster manager.
+ */
+ def decommissionExecutor(executorId: String): Boolean = {
+ val decommissionedExecutors = decommissionExecutors(Seq(executorId),
+ adjustTargetNumExecutors = true)
Review comment:
It's a new function, what are we changing?
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