Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/42#discussion_r10669388
--- Diff: core/src/main/scala/org/apache/spark/ui/SparkUI.scala ---
@@ -68,19 +101,33 @@ private[spark] class SparkUI(sc: SparkContext) extends
Logging {
/** Initialize all components of the server */
def start() {
- // NOTE: This is decoupled from bind() because of the following
dependency cycle:
- // DAGScheduler() requires that the port of this server is known
- // This server must register all handlers, including JobProgressUI,
before binding
- // JobProgressUI registers a listener with SparkContext, which
requires sc to initialize
+ storage.start()
jobs.start()
+ env.start()
exec.start()
+
+ // Storage status listener must receive events first, as other
listeners depend on its state
+ listenerBus.addListener(storageStatusListener)
+ listenerBus.addListener(storage.listener)
+ listenerBus.addListener(jobs.listener)
+ listenerBus.addListener(env.listener)
+ listenerBus.addListener(exec.listener)
+
+ // Log events only if this UI is live and the feature is enabled
+ if (live && conf.getBoolean("spark.eventLog.enabled", false)) {
--- End diff --
That would be cleaner.
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