spark启动不起来报错，救救孩子吧，照着书搞得

Question

[csu@master sbin]$ ./start-all.sh
org.apache.spark.deploy.master.Master running as process 7255. Stop it first.
localhost: starting org.apache.spark.deploy.worker.Worker, logging to /home/csu/spark-2.4.0-bin-hadoop2.7/logs/spark-csu-org.apache.spark.deploy.worker.Worker-1-master.out
localhost: failed to launch: nice -n 0 /home/csu/spark-2.4.0-bin-hadoop2.7/bin/spark-class org.apache.spark.deploy.worker.Worker --webui-port 8081 spark://master:7077
localhost: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
localhost: at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
localhost: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
localhost: at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
localhost: at java.security.AccessController.doPrivileged(Native Method)
localhost: at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
localhost: at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
localhost: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
localhost: at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
localhost: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
localhost: full log in /home/csu/spark-2.4.0-bin-hadoop2.7/logs/spark-csu-org.apache.spark.deploy.worker.Worker-1-master.out

Answer 1

去看看配置文件有没有写错