Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/2933#discussion_r19377652
--- Diff: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
---
@@ -124,6 +123,10 @@ class DAGScheduler(
/** If enabled, we may run certain actions like take() and first()
locally. */
private val localExecutionEnabled =
sc.getConf.getBoolean("spark.localExecution.enabled", false)
+ /** Broadcast the serialized tasks only when they are bigger than it */
+ private val broadcastTaskMinSize =
+ sc.getConf.getInt("spark.scheduler.broadcastTaskMinSize", 8) * 1024
--- End diff --
If user change akka frame size to a small one, the jobs also will stop
working silently even without this patch.
I think we should have good default values for these, and assume that user
know the risk if they want to change some configs, it's not easy to make sure
that they are consistant between all possible values for all the configs.
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