Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/10127#discussion_r46604122
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/JobGenerator.scala
---
@@ -220,7 +220,8 @@ class JobGenerator(jobScheduler: JobScheduler) extends
Logging {
logInfo("Batches pending processing (" + pendingTimes.size + "
batches): " +
pendingTimes.mkString(", "))
// Reschedule jobs for these times
- val timesToReschedule = (pendingTimes ++
downTimes).distinct.sorted(Time.ordering)
+ val timesToReschedule = (pendingTimes ++ downTimes).filter { _ !=
restartTime }
+ .distinct.sorted(Time.ordering)
--- End diff --
Explained offline:
The restart time is always checkpointTime+1 (assuming batch duration = 1).
However, pending times can already have batches >= checkpointTime+1. This can
cause `timesToReschedule` to have batches >= checkpointTime+1, which will be
explicitly submitted, and then resubmitted through the timer.
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