Hi Jeff, It is before 0.6.0. I took this code on a random day 4 month back.
From: Jeff Zhang [mailto:zjf...@gmail.com] Sent: Tuesday, August 2, 2016 7:02 PM To: users@zeppelin.apache.org Subject: Re: Error when starting zeppelin server What version of zeppelin do you use ? On Tue, Aug 2, 2016 at 8:42 PM, Vikash Kumar <vikash.ku...@resilinc.com<mailto:vikash.ku...@resilinc.com>> wrote: 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 -- Best Regards Jeff Zhang