Github user steveloughran commented on a diff in the pull request:
https://github.com/apache/spark/pull/9182#discussion_r43498840
--- Diff:
yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnSchedulerBackend.scala
---
@@ -51,6 +51,41 @@ private[spark] abstract class YarnSchedulerBackend(
private implicit val askTimeout = RpcUtils.askRpcTimeout(sc.conf)
+ /** Application ID. Must be set by a subclass before starting the
service */
+ private var appId: ApplicationId = null
+
+ /** Attempt ID. This is unset for client-mode schedulers */
+ private var attemptId: Option[ApplicationAttemptId] = None
+
+ /** Scheduler extension services */
+ private val services: SchedulerExtensionServices = new
SchedulerExtensionServices()
+
+ /**
+ * Bind to YARN. This *must* be done before calling [[start()]].
+ *
+ * @param appId YARN application ID
+ * @param attemptId Optional YARN attempt ID
+ */
+ protected def bindToYarn(appId: ApplicationId, attemptId:
Option[ApplicationAttemptId]): Unit = {
+ this.appId = appId
+ this.attemptId = attemptId
+ }
+
+ override def start() {
+ require(appId != null, "application ID unset")
+ val binding = SchedulerExtensionServiceBinding(sc, appId, attemptId)
+ services.start(binding)
--- End diff --
Regarding that cluster timestamp, it came in with RM HA; its the thing that
broke any 2.2 string parsing.
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