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https://issues.apache.org/jira/browse/HADOOP-14024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16067323#comment-16067323
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John Zhuge commented on HADOOP-14024:
-------------------------------------
Fixed after changing this section in JMXJsonServlet.java:
{code:java}
if (!HttpServer2.isStaticUserAndNoneAuthType(servletContext, request) &&
!isInstrumentationAccessAllowed(request, response)) {
{code}
to
{code:java}
if (!isInstrumentationAccessAllowed(request, response)) {
{code}
Somehow HADOOP-13707 introduced the dependency on jetty indirectly via
hadoop-common's {{HttpServer2.isStaticUserAndNoneAuthType}} but
hadoop-kms/pom.xml has jetty shaded from hadoop-common.
> KMS JMX endpoint throws ClassNotFoundException
> ----------------------------------------------
>
> Key: HADOOP-14024
> URL: https://issues.apache.org/jira/browse/HADOOP-14024
> Project: Hadoop Common
> Issue Type: Bug
> Components: kms
> Affects Versions: 2.8.0
> Reporter: Andrew Wang
> Assignee: John Zhuge
> Priority: Critical
>
> Throws like this:
> {noformat}
> </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)
> {noformat}
> 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
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