Github user YanTangZhai commented on a diff in the pull request:
https://github.com/apache/spark/pull/3810#discussion_r22776305
--- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala ---
@@ -55,13 +57,9 @@ private[spark] class Client(
*
-------------------------------------------------------------------------------------
*/
/**
- * Submit an application running our ApplicationMaster to the
ResourceManager.
- *
- * The stable Yarn API provides a convenience method
(YarnClient#createApplication) for
- * creating applications and setting up the application submission
context. This was not
- * available in the alpha API.
+ * Create an application running our ApplicationMaster to the
ResourceManager.
*/
- override def submitApplication(): ApplicationId = {
+ override def createApplication(): ApplicationId = {
--- End diff --
SparkContext firstly gets applicationId from taskScheduler and uses it to
initialize blockManager and eventLogger. And then dagScheduler runs job and
submits resources requests to cluster master.
Getting applicationId and submitting resources requests to cluster master
are split into two methods.
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