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Xuan Gong commented on YARN-3582: --------------------------------- Committed into trunk/branch-2. Thanks, Jian > NPE in WebAppProxyServlet > ------------------------- > > Key: YARN-3582 > URL: https://issues.apache.org/jira/browse/YARN-3582 > Project: Hadoop YARN > Issue Type: Bug > Reporter: Jian He > Assignee: Jian He > Labels: BB2015-05-TBR > Fix For: 2.8.0 > > Attachments: YARN-3582.1.patch > > > {code} > HTTP ERROR 500 > Problem accessing /proxy. Reason: > INTERNAL_SERVER_ERROR > Caused by: > java.lang.NullPointerException > at > org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet.doGet(WebAppProxyServlet.java:245) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) > at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221) > at > com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:66) > at > com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:900) > at > com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:834) > at > org.apache.hadoop.yarn.server.resourcemanager.webapp.RMWebAppFilter.doFilter(RMWebAppFilter.java:84) > at > com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:795) > at > com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:163) > at > com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:58) > at > com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118) > at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at > org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:109) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at > org.apache.hadoop.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1192) > at > org.mortbay.jetty.servlet.ServletHandler$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} -- This message was sent by Atlassian JIRA (v6.3.4#6332)