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https://issues.apache.org/jira/browse/HADOOP-13215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kai Sasaki resolved HADOOP-13215.
---------------------------------
Resolution: Duplicate
> INTERNAL_SERVER_ERROR due to NPE from PseudoAuthenticationHandler
> -----------------------------------------------------------------
>
> Key: HADOOP-13215
> URL: https://issues.apache.org/jira/browse/HADOOP-13215
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.7.2, 3.0.0-alpha1
> Reporter: Kai Sasaki
> Assignee: Kai Sasaki
>
> After upgrading httpc* in HADOOP-12767, ServletRequest can pass null value
> with {{getQueryString}}.
> When {{PseudoAuthenticationHandler}} is used, NPE has been occurred.
> We have encountered this exception in backporting to Hadoop 2.7.x, but it
> looks like it can occur later version Hadoops.
> {code}
> HTTP ERROR 500
> Problem accessing /cluster. Reason:
> INTERNAL_SERVER_ERROR
> Caused by:
> java.lang.NullPointerException
> at
> org.apache.http.client.utils.URLEncodedUtils.parse(URLEncodedUtils.java:235)
> at
> org.apache.hadoop.security.authentication.server.PseudoAuthenticationHandler.getUserName(PseudoAuthenticationHandler.java:145)
> at
> org.apache.hadoop.security.authentication.server.PseudoAuthenticationHandler.authenticate(PseudoAuthenticationHandler.java:181)
> at
> org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationHandler.authenticate(DelegationTokenAuthenticationHandler.java:348)
> at
> org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:519)
> at
> org.apache.hadoop.yarn.server.security.http.RMAuthenticationFilter.doFilter(RMAuthenticationFilter.java:82)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1243)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
> {code}
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