vishwas-n commented on a change in pull request #28879:
URL: https://github.com/apache/spark/pull/28879#discussion_r443951411
##########
File path:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala
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@@ -254,9 +254,11 @@ private[spark] class ApplicationMaster(args:
ApplicationMasterArguments) extends
var attemptID: Option[String] = None
if (isClusterMode) {
- // Set the web ui port to be ephemeral for yarn so we don't conflict
with
- // other spark processes running on the same box
- System.setProperty("spark.ui.port", "0")
+ // Set the web ui port to be ephemeral for yarn if not set explicitly
+ // so we don't conflict with other spark processes running on the same
box
+ if (System.getProperty("spark.ui.port") != null) {
Review comment:
@rajatahujaatinmobi , the check must use '==' operator and not '!='
say spark.ui.port is set to 9999, above if condition equates to true and
value is overridden to 0(random port)
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