Bobs Bobs - 14 days ago 5
Scala Question

ERROR Utils: Uncaught exception in thread SparkListenerBus

I try to execute simple project with Apache Spark. This is my code SimpleApp.scala

/* SimpleApp.scala */
import org.apache.spark.SparkContext
import org.apache.spark.SparkContext._
import org.apache.spark.SparkConf

object SimpleApp {
def main(args: Array[String]) {
val logFile = "/home/hduser/spark-1.2.0-bin-hadoop2.4/README.md" // Should be some file on your system
// val conf = new SparkConf().setAppName("Simple Application")
val sc = new SparkContext("local", "Simple Job", "/home/hduser/spark-1.2.0-bin-hadoop2.4/")
val logData = sc.textFile(logFile, 2).cache()
val numAs = logData.filter(line => line.contains("hadoop")).count()
val numBs = logData.filter(line => line.contains("see")).count()
println("Lines with hadoop: %s, Lines with see: %s".format(numAs, numBs))
}
}


when I manually send this job to Spark with command line :
/home/hduser/spark-1.2.0-hadoop-2.4.0/bin/spark-submit --class "SimpleApp" --master local[4] target/scala-2.10/simple-project_2.10-1.0.jar
it's run successfully.

if I run with
sbt run
and with the service apache spark is running, it's success, but in the end of log it give error like this :

15/02/06 15:56:49 ERROR Utils: Uncaught exception in thread SparkListenerBus
java.lang.InterruptedException
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:996)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1303)
at java.util.concurrent.Semaphore.acquire(Semaphore.java:317)
at org.apache.spark.scheduler.LiveListenerBus$$anon$1$$anonfun$run$1.apply$mcV$sp(LiveListenerBus.scala:48)
at org.apache.spark.scheduler.LiveListenerBus$$anon$1$$anonfun$run$1.apply(LiveListenerBus.scala:47)
at org.apache.spark.scheduler.LiveListenerBus$$anon$1$$anonfun$run$1.apply(LiveListenerBus.scala:47)
at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1460)
at org.apache.spark.scheduler.LiveListenerBus$$anon$1.run(LiveListenerBus.scala:46)
15/02/06 15:56:49 ERROR ContextCleaner: Error in cleaning thread
java.lang.InterruptedException
at java.lang.Object.wait(Native Method)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
at org.apache.spark.ContextCleaner$$anonfun$org$apache$spark$ContextCleaner$$keepCleaning$1.apply$mcV$sp(ContextCleaner.scala:136)
at org.apache.spark.ContextCleaner$$anonfun$org$apache$spark$ContextCleaner$$keepCleaning$1.apply(ContextCleaner.scala:134)
at org.apache.spark.ContextCleaner$$anonfun$org$apache$spark$ContextCleaner$$keepCleaning$1.apply(ContextCleaner.scala:134)
at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1460)
at org.apache.spark.ContextCleaner.org$apache$spark$ContextCleaner$$keepCleaning(ContextCleaner.scala:133)
at org.apache.spark.ContextCleaner$$anon$3.run(ContextCleaner.scala:65)


Any wrong in my code? Thanks in advance.
I use apache spark 1.2.0-bin-hadoop-2.4, scala 2.10.4

Answer

Nothing is wrong in your code.

It is confusing, but you can safely disregard this error.

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