[GitHub] spark pull request: [SPARK-4087] use broadcast for task only when ...

[davies <gi...@git.apache.org>]

Github user davies commented on a diff in the pull request:

    https://github.com/apache/spark/pull/2933#discussion_r19369470
  
    --- 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 --
    
    As discussed offline, user will take the risk if they change it to non-reasonable values.


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