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From Keith Lim <Keith....@ds-iq.com>
Subject Starting Nifi encounters "unexpected error"
Date Wed, 04 May 2016 20:05:43 GMT
My windows machine blue-d screen and after reboot I restarted nifi only to get the following
error when I browse to nifi (http://localhost:8080/nifi/)
I can do the long route or cleaning up the nifi folder and rebuilding it, but want to know
if there is a surgical way to remove this issue.

Thanks,
Keith

An unexpected error has occurred
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>Error 500 Server Error</title> </head> <body><h2>HTTP
ERROR 500</h2> <p>Problem accessing /nifi-api/controller/authorities. Reason:
<pre> Server Error</pre></p><h3>Caused by:</h3><pre>java.lang.NullPointerException
at org.apache.nifi.web.security.anonymous.NiFiAnonymousUserFilter.createAuthentication(NiFiAnonymousUserFilter.java:58)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:97)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.apache.nifi.web.security.node.NodeAuthorizedUserFilter.doFilter(NodeAuthorizedUserFilter.java:112)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176) at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.apache.nifi.web.filter.ThreadLocalFilter.doFilter(ThreadLocalFilter.java:38) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.apache.nifi.web.filter.TimerFilter.doFilter(TimerFilter.java:52) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) at org.eclipse.jetty.server.Server.handle(Server.java:499)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) at java.lang.Thread.run(Thread.java:745)
</pre> <hr><i><small>Powered by Jetty://</small></i><hr/>
</body> </html>


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