vanzin commented on a change in pull request #23599: [SPARK-24793][K8s] Enhance
spark-submit for app management
URL: https://github.com/apache/spark/pull/23599#discussion_r268366018
##########
File path: core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala
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@@ -1348,6 +1367,23 @@ private[spark] object SparkSubmitUtils {
}
}
+ private[deploy] def getSubmitOperations(master: String):
SparkSubmitOperation = {
+ val loader = Utils.getContextOrSparkClassLoader
+ val serviceLoaders =
+ ServiceLoader.load(classOf[SparkSubmitOperation], loader)
+ .asScala
+ .filter(_.supports(master))
+
+ serviceLoaders.size match {
+ case x if x > 1 =>
+ throw new SparkException(s"Multiple($x) external SparkSubmitOperations
" +
+ s"clients registered for master url ${master}.")
+ case 1 => serviceLoaders.headOption.get
+ case _ =>
+ throw new IllegalArgumentException(s"No external SparkSubmitOperations
" +
+ s"clients found for master url: '$master'")
Review comment:
nit: indent more
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