Spark Ensime SBT Notes

| 分类 Spark  | 标签 spark  sbt 

简单记录一下折腾 Spark, Ensime, sbt 过程中遇到的问题。

sbt run 报错: Uncaught exception in thread SparkListenerBus

表现

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)

原因

SparkSession、SparkContext 没有关闭

解决方法

下面两者均可:

  • 添加 sc.stop() 或者 spark.stop()
  • build.sbt 里面添加:
    fork := true
    

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