Hi All,
                We are getting the error when starting zeppelin daemon. We are 
running with 4 month old code where we made some changes into code. Same code 
is running on HDP 2.3 on VM but when running  on HDP 2.4 on another system we 
are getting this error :

Exception in thread "main" java.lang.SecurityException: class 
"javax.servlet.ServletRegistration$Dynamic"'s signer information does not match 
signer information of other classes in the same package
                at java.lang.ClassLoader.checkCerts(ClassLoader.java:898)
                at java.lang.ClassLoader.preDefineClass(ClassLoader.java:668)
                at java.lang.ClassLoader.defineClass(ClassLoader.java:761)
                at 
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
                at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
                at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
                at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
                at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
                at java.security.AccessController.doPrivileged(Native Method)
                at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
                at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
                at 
org.apache.zeppelin.server.ZeppelinServer.setupRestApiContextHandler(ZeppelinServer.java:228)
                at 
org.apache.zeppelin.server.ZeppelinServer.main(ZeppelinServer.java:105)

System Configs :
                CentOS 7.2
                HDP 2.4
                JAVA 1.8
                Spark 1.6.1



Thanks and regards,
Vikash Kumar

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