Critical Description
ReceivedBlockTracker - Exception thrown while writing record: BatchCleanupEvent(ArrayBuffer()) to the WriteAheadLog. org.apache.spark.SparkException: Exception thrown in awaitResult: at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:194) at org.apache.spark.streaming.util.BatchedWriteAheadLog.write(BatchedWriteAheadLog.scala:83) at org.apache.spark.streaming.scheduler.ReceivedBlockTracker.writeToLog(ReceivedBlockTracker.scala:234) at org.apache.spark.streaming.scheduler.ReceivedBlockTracker.cleanupOldBatches(ReceivedBlockTracker.scala:171) at org.apache.spark.streaming.scheduler.ReceiverTracker.cleanupOldBlocksAndBatches(ReceiverTracker.scala:226) at org.apache.spark.streaming.scheduler.JobGenerator.clearCheckpointData(JobGenerator.scala:287) at org.apache.spark.streaming.scheduler.JobGenerator.org$apache$spark$streaming$scheduler$JobGenerator$$processEvent(JobGenerator.scala:187) at org.apache.spark.streaming.scheduler.JobGenerator$$anon$1.onReceive(JobGenerator.scala:89) at org.apache.spark.streaming.scheduler.JobGenerator$$anon$1.onReceive(JobGenerator.scala:88) at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48) Caused by: java.util.concurrent.TimeoutException: Futures timed out after [5000 milliseconds] at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219) at scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223) at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:190) at scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53) at scala.concurrent.Await$.result(package.scala:190) at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:190) ... 9 more