Github user mwws commented on a diff in the pull request:
https://github.com/apache/spark/pull/11101#discussion_r53335941
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/JobGenerator.scala
---
@@ -123,6 +126,12 @@ class JobGenerator(jobScheduler: JobScheduler) extends
Logging {
timedOut
}
+ // generate one more bacth to make sure RDD in lastJob is
checkpointed.
+ if (!jobScheduler.receiverTracker.hasUnallocatedBlocks &&
+ ssc.graph.isCheckpointMissedLastTime) {
+ Thread.sleep(ssc.graph.batchDuration.milliseconds)
--- End diff --
If task execution time is longer than batchDuration, it usually means that
the streaming application is not healhy and user need to adjust parameters to
avoid such scenario.
And the "thread.sleep" here is to make sure a new job could be generated,
it's nothing to do with job execution.
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