Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/18253#discussion_r130759258
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -2379,8 +2382,13 @@ class SparkContext(config: SparkConf) extends
Logging {
" parameter from breaking Spark's ability to find a valid
constructor.")
}
}
- listenerBus.addListener(listener)
- logInfo(s"Registered listener $className")
+ logInfo(s"listener $className created")
+ listener
+ }
+ if (extraListeners.nonEmpty) {
+ val group = new FixGroupOfListener(extraListeners,
"extraListeners")
--- End diff --
> First, I think that modifying the existing addListener method is a bad
idea. It will impact a lot the code.
That's why overloaded methods exist.
> But I have 2 kind of group of listeners
I don't think there's really a distinction between the two types of groups
you mention. The "UI group" is just a modifiable group that you don't modify
after it's been created.
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