Github user tdas commented on a diff in the pull request: https://github.com/apache/spark/pull/4032#discussion_r23366311 --- Diff: streaming/src/main/scala/org/apache/spark/streaming/scheduler/JobGenerator.scala --- @@ -206,9 +208,13 @@ class JobGenerator(jobScheduler: JobScheduler) extends Logging { val timesToReschedule = (pendingTimes ++ downTimes).distinct.sorted(Time.ordering) logInfo("Batches to reschedule (" + timesToReschedule.size + " batches): " + timesToReschedule.mkString(", ")) - timesToReschedule.foreach(time => + timesToReschedule.foreach { time => + // Allocate the related blocks when recovering from failure, because some added but not + // allocated block is dangled in the queue after recovering, we have to insert some block --- End diff -- Grammar fix "..some blocks that were added but not allocated, are dangling in the queue after recovering. We have to allocate thoe blocks to the next batch, which is the batch they were supposed to go to."
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