线程“主”java.lang.NoClassDefFoundError 中的异常：org/apache/hadoop/fs/FSDataInputStream答案

【问题标题】：Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/FSDataInputStream线程“主”java.lang.NoClassDefFoundError 中的异常：org/apache/hadoop/fs/FSDataInputStream
【发布时间】：2017-06-07 23:09:14
【问题描述】：

我正在向 Hadoop 集群提交远程 Spark 作业。但是低于错误消息可以帮助我解决这个问题。

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/FSDataInputStream
    at org.apache.spark.Logging$.<init>(Logging.scala:162)
    at org.apache.spark.Logging$.<clinit>(Logging.scala)
    at org.apache.spark.Logging$class.initializeIfNecessary(Logging.scala:103)
    at org.apache.spark.Logging$class.log(Logging.scala:50)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.log(ApplicationMaster.scala:635)
    at org.apache.spark.deploy.yarn.ApplicationMaster$.main(ApplicationMaster.scala:649)
    at org.apache.spark.deploy.yarn.ExecutorLauncher$.main(ApplicationMaster.scala:674)
    at org.apache.spark.deploy.yarn.ExecutorLauncher.main(ApplicationMaster.scala)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.fs.FSDataInputStream
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 8 more

【问题讨论】：

标签： hadoop apache-spark

【解决方案1】：

问题出在类路径上。

我在应用程序中添加了以下代码，它解决了这个问题：

.set("spark.hadoop.yarn.application.classpath",
                                     "/etc/hadoop/conf,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/hadoop/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/hadoop/lib/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/hadoop-hdfs/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/hadoop-hdfs/lib/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/hadoop-mapreduce/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/hadoop-mapreduce/lib/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/hadoop-yarn/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/hadoop-yarn/lib/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/spark/*,"
                                             + "/opt/cloudera/parcels/CDH-5.7.1-1.cdh5.7.1.p0.11/lib/spark/lib/*")

【讨论】：

【解决方案2】：

您使用的是为用户提供的 Hadoop 预先构建的 Spark 分发版。尝试下载“为 Hadoop 2.x 或更高版本预构建”的发行版，其中 x 是您现有的 Hadoop 集群版本，看看它是否适合您。

【讨论】：

我正在使用 CDH 集群。我已经使用包裹安装了火花。
抱歉，没有使用 CDH 的经验，但我在独立的 Spark 集群上遇到了同样的错误，如上所述已成功解决。

【解决方案3】：

要解决此问题，请使用以下命令运行 spark：

/usr/local/spark/bin/spark-shell

【讨论】：