我正在尝试在一台安装了 Java 版本为 jdk 1.7 的远程机器上运行使用 Maven 和 JDK1.8 构建的 Spark 应用程序。使用 spark-submit 命令：
./bin/spark-submit --class myapp.Main --master local[*] /home/mbala/myJars/CDCJar/myapp-0.0.1-SNAPSHOT.jar /home/mbala/myJars/CDCJar/previous.csv /home/mbala/myJars/CDCJar/source.csv /home/mbala/fer
出现以下异常：
该错误表示您正在尝试运行一个使用Java版本52的应用程序，而您当前的Java版本较低。请升级您的Java版本以解决此问题。Exception in thread "main" java.lang.UnsupportedClassVersionError: myapp/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:274) at org.apache.spark.util.Utils$.classForName(Utils.scala:225) at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:686) at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:185) at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:210) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:124) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)