Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/2143#discussion_r16754019
--- Diff: core/src/main/scala/org/apache/spark/ContextCleaner.scala ---
@@ -76,6 +76,20 @@ private[spark] class ContextCleaner(sc: SparkContext)
extends Logging {
private val blockOnCleanupTasks = sc.conf.getBoolean(
"spark.cleaner.referenceTracking.blocking", true)
+ /**
+ * Whether the cleaning thread will block on shuffle cleanup tasks.
+ * This overrides the global setting `blockOnCleanupTasks`
--- End diff --
maybe say "this overrides the global setting
`spark.cleaner.referenceTracking.blocking`" instead?
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