Github user kayousterhout commented on a diff in the pull request:
https://github.com/apache/spark/pull/11996#discussion_r64813822
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/TaskSchedulerImpl.scala ---
@@ -64,6 +64,8 @@ private[spark] class TaskSchedulerImpl(
// How often to check for speculative tasks
val SPECULATION_INTERVAL_MS =
conf.getTimeAsMs("spark.speculation.interval", "100ms")
+ val MIN_TIME_TO_SPECULATION = 100
--- End diff --
Can you add a comment here? Something like "Duplicate copies of a task will
only be launched if the original copy has been running for at least this amount
of time. This is to avoid the overhead of launching speculative copies of tasks
that are very short."
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
