Why does submitting a job fail with "NoSuchMethodError: scala.runtime.VolatileObjectRef.zero()Lscala/runtime/VolatileObjectRef;"?

Question

我正在尝试提交 Spark 作业

它是这样开始的：

import javax.xml.parsers.{SAXParser, SAXParserFactory}

import org.apache.spark
import org.apache.spark.graphx.{Graph, Edge, VertexId}
import org.apache.spark.rdd.{PairRDDFunctions, RDD}
import org.apache.spark.storage.StorageLevel
import org.apache.spark.{SparkContext, SparkConf}
import scala.util.Try
import org.apache.log4j.{Level, Logger}


object MyApp {

  def main(args: Array[String]) {

    val sparkConf = new SparkConf().setAppName("MyApp")
    val sc = new SparkContext(sparkConf)

当我启动它时出现以下错误：

App > Exception in thread "main" java.lang.NoSuchMethodError: scala.runtime.VolatileObjectRef.zero()Lscala/runtime/VolatileObjectRef;
App > at MyApp$.main(MyApp.scala)
App > at MyApp.main(MyApp.scala)
App > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
App > at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
App > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
App > at java.lang.reflect.Method.invoke(Method.java:606)
App > at org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:328)
App > at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:75)
App > at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)

我做错了什么？

编辑：包括完整的堆栈跟踪。使用 Scala 2.10 和 Spark 1.2.0。奇怪的是，在我的罐子里，我有两个类。当我提交一个 spark 时，它可以工作（这是一个 4 行虚拟作业），但是当我运行较长的一个（大约 40 行）时，如果失败并出现

以上的错误

Answer 1

zero() on scala.runtime.VolatileObjectRef 已在 Scala 2.11 中引入您可能有一个针对 Scala 2.11 和运行在 Scala 2.10 运行时编译的库。

见

Answer 2

检查 Maven 依赖项的工件和版本。我在使用

时遇到了同样的错误

<dependency>
    <groupId>org.apache.spark</groupId>
    <artifactId>spark-core_2.10</artifactId>
    <version>2.0.1</version>
</dependency>

<dependency>
    <groupId>org.apache.spark</groupId>
    <artifactId>spark-sql_2.11</artifactId>
    <version>2.0.1</version>
</dependency>

我不得不将 spark-core_2.10 更改为 spark-core_2.11，异常消失了。

Why does submitting a job fail with "NoSuchMethodError: scala.runtime.VolatileObjectRef.zero()Lscala/runtime/VolatileObjectRef;"?

Why does submitting a job fail with "NoSuchMethodError: scala.runtime.VolatileObjectRef.zero()Lscala/runtime/VolatileObjectRef;"?

scala

apache-spark