Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/16189#discussion_r92905791
--- Diff: core/src/main/scala/org/apache/spark/executor/Executor.scala ---
@@ -432,6 +465,93 @@ private[spark] class Executor(
}
/**
+ * Supervises the killing / cancellation of a task by sending the
interrupted flag, optionally
+ * sending a Thread.interrupt(), and monitoring the task until it
finishes.
+ */
+ private class TaskReaper(
--- End diff --
It will be good to explain more about how this class works. It is great
that we have comments at specific parts, but a section explains the workflow
will be very helpful to future readers.
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