Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/42#discussion_r10642071
--- Diff: core/src/main/scala/org/apache/spark/deploy/master/Master.scala
---
@@ -634,6 +653,36 @@ private[spark] class Master(host: String, port: Int,
webUiPort: Int,
}
}
+ /**
+ * Start a new SparkUI rendered from persisted storage. If this is
unsuccessful for any reason,
+ * return None. Otherwise return the reconstructed UI.
+ */
+ def startPersistedSparkUI(app: ApplicationInfo): Option[SparkUI] = {
--- End diff --
When a completed application gets removed from `completedApps` we should
also remove the UI handlers so that they get garbage collected. Checkout the
lines relating to `RETAINED_APPLICATIONS` inside of `removeApplication`.
Otherwise, over time, this will cause the master to run out of memory because
of all the UI state.
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