Github user ericl commented on a diff in the pull request:
https://github.com/apache/spark/pull/17166#discussion_r107271185
--- Diff: core/src/main/scala/org/apache/spark/TaskContextImpl.scala ---
@@ -59,8 +59,8 @@ private[spark] class TaskContextImpl(
/** List of callback functions to execute when the task fails. */
@transient private val onFailureCallbacks = new
ArrayBuffer[TaskFailureListener]
- // Whether the corresponding task has been killed.
- @volatile private var interrupted: Boolean = false
+ // If defined, the corresponding task has been killed for the contained
reason.
+ @volatile private var maybeKillReason: Option[String] = None
--- End diff --
Yeah, the reason here is to allow this to be set atomically.
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