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

    https://github.com/apache/spark/pull/17166#discussion_r107237325
  
    --- Diff: core/src/main/scala/org/apache/spark/api/python/PythonRDD.scala 
---
    @@ -215,7 +215,8 @@ private[spark] class PythonRunner(
     
               case e: Exception if context.isInterrupted =>
                 logDebug("Exception thrown after task interruption", e)
    -            throw new TaskKilledException
    +            context.killTaskIfInterrupted()
    +            null  // not reached
    --- End diff --
    
    nit: It would be good if we could directly throw the exception here - 
instead of relying on killTaskIfInterrupted to do the right thing (it is 
interrupted already according to the case check)
    Not only will it not remove the unreachable `null`, but also ensure future 
changes to `killTaskIfInterrupted` or interrupt reset, etc does not break this.


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