Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/3009#discussion_r20669493
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/SparkListener.scala ---
@@ -56,7 +56,11 @@ case class SparkListenerTaskEnd(
extends SparkListenerEvent
@DeveloperApi
-case class SparkListenerJobStart(jobId: Int, stageIds: Seq[Int],
properties: Properties = null)
+case class SparkListenerJobStart(
+ jobId: Int,
+ stageInfos: Seq[StageInfo],
+ stageIds: Seq[Int], // Note: this is here for backwards-compatibility
--- End diff --
The issue if someone with an older version of Spark reads a log message
from a newer version. We can't go back and modify how older versions parse the
fields, so we need to include fields expected by older versions.
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