java.lang.AssertionError

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  • When running on spark on yarn and accessing an HDFS file (like in the SparkHdfsLR example) while using the event logging configured to write logs to HDFS, it throws an exception at the end of the application. SPARK_JAVA_OPTS=-Dspark.eventLog.enabled=true -Dspark.eventLog.dir=hdfs:///history/spark/ 14/04/03 13:41:31 INFO yarn.ApplicationMaster$$anon$1: Invoking sc stop from shutdown hook Exception in thread "Thread-41" java.io.IOException: Filesystem closed at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:398) at org.apache.hadoop.hdfs.DFSOutputStream.hflush(DFSOutputStream.java:1465) at org.apache.hadoop.hdfs.DFSOutputStream.sync(DFSOutputStream.java:1450) at org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:116) at org.apache.spark.util.FileLogger$$anonfun$flush$2.apply(FileLogger.scala:137) at org.apache.spark.util.FileLogger$$anonfun$flush$2.apply(FileLogger.scala:137) at scala.Option.foreach(Option.scala:236) at org.apache.spark.util.FileLogger.flush(FileLogger.scala:137) at org.apache.spark.scheduler.EventLoggingListener.logEvent(EventLoggingListener.scala:69) at org.apache.spark.scheduler.EventLoggingListener.onApplicationEnd(EventLoggingListener.scala:101) at org.apache.spark.scheduler.SparkListenerBus$$anonfun$postToAll$13.apply(SparkListenerBus.scala:67) at org.apache.spark.scheduler.SparkListenerBus$$anonfun$postToAll$13.apply(SparkListenerBus.scala:67) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) at org.apache.spark.scheduler.SparkListenerBus$class.postToAll(SparkListenerBus.scala:67) at org.apache.spark.scheduler.LiveListenerBus.postToAll(LiveListenerBus.scala:31) at org.apache.spark.scheduler.LiveListenerBus.post(LiveListenerBus.scala:78) at org.apache.spark.SparkContext.postApplicationEnd(SparkContext.scala:1081) at org.apache.spark.SparkContext.stop(SparkContext.scala:828) at org.apache.spark.deploy.yarn.ApplicationMaster$$anon$1.run(ApplicationMaster.scala:460)
    via by Thomas Graves,
    • java.lang.AssertionError: assertion failed at scala.Predef$.assert(Predef.scala:165) at org.apache.spark.deploy.yarn.ApplicationMaster.waitForSparkContextInitialized(ApplicationMaster.scala:234) at org.apache.spark.deploy.yarn.ApplicationMaster.run(ApplicationMaster.scala:107) at org.apache.spark.deploy.yarn.ApplicationMaster$.main(ApplicationMaster.scala:480) at org.apache.spark.deploy.yarn.ApplicationMaster.main(ApplicationMaster.scala)

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