[HADOOP-14024] KMS JMX endpoint throws ClassNotFoundException

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.9.0, 2.8.2
• Component/s: kms
• Target Version/s: 2.9.0, 2.8.1
• Assignee: John Zhuge
• Reporter: Andrew Wang
• Created: 25/Jan/17 23:28
• Updated: 30/Jun/17 00:03
• Resolved: 29/Jun/17 23:29

Description

Throws like this:

</pre></p><p><b>root cause</b> <pre>java.lang.ClassNotFoundException: org.mortbay.jetty.servlet.Context
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1698)
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1544)
	org.apache.hadoop.jmx.JMXJsonServlet.doGet(JMXJsonServlet.java:174)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
	org.apache.hadoop.crypto.key.kms.server.KMSMDCFilter.doFilter(KMSMDCFilter.java:84)
	org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:636)
	org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationFilter.doFilter(DelegationTokenAuthenticationFilter.java:304)
	org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:588)
	org.apache.hadoop.crypto.key.kms.server.KMSAuthenticationFilter.doFilter(KMSAuthenticationFilter.java:129)

I tried out branch-2.6 and it seems to be okay, so something changed between 2.6.x and 2.8.x/branch-2

Issue Links

• is broken by: HADOOP-13707 If kerberos is enabled while HTTP SPNEGO is not configured, some links cannot be accessed
• is related to: HADOOP-13872 KMS JMX exception