tgravescs commented on a change in pull request #28476:
URL: https://github.com/apache/spark/pull/28476#discussion_r421535403
##########
File path:
core/src/main/scala/org/apache/spark/scheduler/TaskSchedulerImpl.scala
##########
@@ -688,10 +688,11 @@ private[spark] class TaskSchedulerImpl(
val errorMsg =
s"Fail resource offers for barrier stage ${taskSet.stageId}
because only " +
s"${addressesWithDescs.size} out of a total number of
${taskSet.numTasks}" +
- s" tasks got resource offers. This happens because barrier
execution currently " +
- s"does not work gracefully with delay scheduling. We highly
recommend you to " +
- s"disable delay scheduling by setting spark.locality.wait=0 as
a workaround if " +
- s"you see this error frequently."
+ s" tasks got resource offers. This could happen if delay
scheduling or " +
+ s"blacklisting is enabled, as barrier execution currently does
not work " +
+ s"gracefully with them. We highly recommend you to disable
delay scheduling " +
+ s"by setting spark.locality.wait=0 or disable blacklisting by
setting " +
Review comment:
I'm not sure if we should recommend disabling blacklisting. If it was
supposed to be blacklisted assumption is something was wrong with it so job
would probably fail anyway. Maybe we should just say it may have been
blacklisted like before.
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