[ https://issues.apache.org/jira/browse/HDFS-6687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mit Desai updated HDFS-6687: ---------------------------- Target Version/s: 2.6.0 (was: 2.5.0) > nn.getNamesystem() may return NPE from JspHelper > ------------------------------------------------ > > Key: HDFS-6687 > URL: https://issues.apache.org/jira/browse/HDFS-6687 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 2.5.0 > Reporter: Mit Desai > Assignee: Mit Desai > > In hadoop-2, the http server is started in the very early stage to show the > progress. If the user tries to get the name system, it may not be completely > up and the NN logs will have this kind of error. > {noformat} > 2014-07-14 15:49:03,521 [***] WARN > resources.ExceptionHandler: INTERNAL_SERVER_ERROR > java.lang.NullPointerException > at > org.apache.hadoop.hdfs.server.common.JspHelper.getTokenUGI(JspHelper.java:661) > at > org.apache.hadoop.hdfs.server.common.JspHelper.getUGI(JspHelper.java:604) > at > org.apache.hadoop.hdfs.web.resources.UserProvider.getValue(UserProvider.java:53) > at > org.apache.hadoop.hdfs.web.resources.UserProvider.getValue(UserProvider.java:41) > at > com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues(InjectableValuesProvider.java:46) > at > com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.java:153) > at > com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:203) > at > com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) > at > com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288) > at > com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) > at > com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) > at > com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) > at > com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) > at > com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469) > at > com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400) > at > com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349) > at > com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339) > at > com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416) > at > com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537) > at > com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699) > 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$CachedChain.doFilter(ServletHandler.java:1221) > at org.apache.hadoop.hdfs.web.AuthFilter.doFilter(AuthFilter.java:84) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:78) > at com.yahoo.hadoop.GzipFilter.doFilter(GzipFilter.java:220) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at > org.apache.hadoop.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1223) > 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$CachedChain.doFilter(ServletHandler.java:1212) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) > at > org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) > at org.mortbay.jetty.Server.handle(Server.java:326) > at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) > at > org.mortbay.jetty.HttpConnection$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) > {noformat} > We need to check this and return appropriate message back to the user. -- This message was sent by Atlassian JIRA (v6.3.4#6332)