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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6653) NullPointerException in setupSaslConnection when browsing directories
Date Sun, 21 Mar 2010 21:15:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12847982#action_12847982
] 

Owen O'Malley commented on HADOOP-6653:
---------------------------------------

Most namenode pages are ok, but the gridnodes are still inaccessible and dropping stack traces.

http://dn.:50075/browseDirectory.jsp?namenodeInfoPort=50070&dir=%2F still failing:

RequestURI=/browseDirectory.jsp
Caused by:

java.lang.NullPointerException
        at org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:365)
        at org.apache.hadoop.ipc.Client$Connection.access$900(Client.java:187)
        at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:438)
        at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:435)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:832)
        at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:435)
        at org.apache.hadoop.ipc.Client$Connection.access$1800(Client.java:187)
        at org.apache.hadoop.ipc.Client.getConnection(Client.java:1003)
        at org.apache.hadoop.ipc.Client.call(Client.java:863)
        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:222)
        at $Proxy7.getProtocolVersion(Unknown Source)
        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:360)
        at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:106)
        at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:208)
        at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:175)
        at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:165)
        at org.apache.hadoop.hdfs.server.namenode.JspHelper$1.run(JspHelper.java:484)
        at org.apache.hadoop.hdfs.server.namenode.JspHelper$1.run(JspHelper.java:482)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:832)
        at org.apache.hadoop.hdfs.server.namenode.JspHelper.getDFSClient(JspHelper.java:481)
        at
org.apache.hadoop.hdfs.server.datanode.browseDirectory_jsp.generateDirectoryStructure(browseDirectory_jsp.java:50)
        at org.apache.hadoop.hdfs.server.datanode.browseDirectory_jsp._jspService(browseDirectory_jsp.java:208)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1124)
        at yjava.servlet.filter.BouncerFilter.doFilter(BouncerFilter.java:411)
        at com.yahoo.hadoop.HadoopBouncerFilter.doFilter(HadoopBouncerFilter.java:62)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115)
        at org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:781)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:361)
        at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:324)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
        at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
        at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
        at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)

> NullPointerException in setupSaslConnection when browsing directories
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-6653
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6653
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>
> e currently get a NullPointerException when setting up SASL RPC connection as part of
browsing the filesystem after
> being redirected to a datanode.

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