Github user YanTangZhai commented on a diff in the pull request:
https://github.com/apache/spark/pull/3810#discussion_r22776371
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -333,9 +333,15 @@ class SparkContext(config: SparkConf) extends Logging
with ExecutorAllocationCli
new SparkException("DAGScheduler cannot be initialized due to
%s".format(e.getMessage))
}
- // start TaskScheduler after taskScheduler sets DAGScheduler reference
in DAGScheduler's
- // constructor
- taskScheduler.start()
+ if (conf.getBoolean("spark.scheduler.app.slowstart", false) && master ==
"yarn-client") {
--- End diff --
I'm sorry that I couldn't get mesos apis to split getting applicationId and
submitting resources requests to cluster master into two methods.
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