[root@nameNode logs]# cat spark-root-org.apache.spark.deploy.master.Master-1-nameNode.out
Spark Command: /usr/java/jdk1.7.0_79/bin/java -cp /opt/spark/sbin/../conf/:/opt/spark/lib/spark-assembly-1.5.0-cdh5.5.0-hadoop2.6.0-cdh5.5.0.jar:/opt/hadoop/etc/hadoop/:/opt/hadoop/etc/hadoop/ -Xms1g -Xmx1g -XX:MaxPermSize=256m org.apache.spark.deploy.master.Master --ip 192.168.2.100 --port 7077 --webui-port 8080
========================================
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/Logger
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2615)
at java.lang.Class.getMethod0(Class.java:2856)
at java.lang.Class.getMethod(Class.java:1668)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)
Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 6 more
[root@nameNode logs]#