Github user chenghao-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/11101#discussion_r54167619
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/JobGenerator.scala
---
@@ -123,6 +126,15 @@ class JobGenerator(jobScheduler: JobScheduler) extends
Logging {
timedOut
}
+ // generate one more batch to make sure RDD in lastJob is
checkpointed. As an performance
+ // optimization, if the latest info has been checkpointed in last
batch, there is no need
+ // to run another round. "isCheckpointMissedLastTime" method here is
in charge of collect
+ // such information from every DStream recursively.
+ if (!jobScheduler.receiverTracker.hasUnallocatedBlocks &&
+ ssc.graph.isCheckpointMissedLastTime) {
+ Thread.sleep(ssc.graph.batchDuration.milliseconds)
+ }
--- End diff --
I just wonder if we can add a double check if the last mini batch finish,
otherwise, at least we can add a warning log.
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