shell - 线程 “delete Spark local dirs”中的异常java.lang.NullPointerException

Question

嗨，我正在通过Shell脚本运行Sparkr Progrm。我将输入文件指向本地意味着它工作正常，但是当我指向hdfs时，它会引发错误。

Exception in thread "delete Spark local dirs" java.lang.NullPointerException

Exception in thread "delete Spark local dirs" java.lang.NullPointerException
at  org.apache.spark.storage.DiskBlockManager.org$apache$spark$storage$DiskBlockManager$$doStop(DiskBlockManager.scala:161)
at  org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply$mcV$sp(DiskBlockManager.scala:141)
at org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply(DiskBlockManager.scala:139)
at org.apache.spark.storage.DiskBlockManager$$anon$1$$anonfun$run$1.apply(DiskBlockManager.scala:139)
at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1617)
at org.apache.spark.storage.DiskBlockManager$$anon$1.run(DiskBlockManager.scala:139)

任何帮助将不胜感激。

Answer 1

我在Scala脚本中遇到了同样的问题。问题出在主URL，所以我删除了设置主URL。

先前:

val conf = new org.apache.spark.SparkConf().setMaster(masterURL).set("spark.ui.port",port).setAppName("TestScalaApp")

固定代码:

val conf = new org.apache.spark.SparkConf().setAppName("TestScalaApp")