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requirement failed at scala.Predef$.require(Predef.scala:221)
java.lang.IllegalArgumentException: requirement failed at scala.Predef$.require(Predef.scala:221)	at org.apache.spark.streaming.scheduler.ReceivedBlockTracker.cleanupOldBatches(ReceivedBlockTracker.scala:166)	at org.apache.spark.streaming.scheduler.ReceiverTracker.cleanupOldBlocksAndBatches(ReceiverTracker.scala:223)	at org.apache.spark.streaming.scheduler.JobGenerator.clearMetadata(JobGenerator.scala:272)	at org.apache.spark.streaming.scheduler.JobGenerator.org$apache$spark$streaming$scheduler$JobGenerator$$processEvent(JobGenerator.scala:182)	at org.apache.spark.streaming.scheduler.JobGenerator$$anon$1.onReceive(JobGenerator.scala:87)	at org.apache.spark.streaming.scheduler.JobGenerator$$anon$1.onReceive(JobGenerator.scala:86)	at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)