Never seen such an error before myself.. some more info would be helpful.. what is the output of jps? Are all daemons running? What happens if you access HDFS from command line ($HADOOP_HOME/bin/hadoop dfs -ls /)? Are you able to -put files into HDFS from command line?
hari On Wed, Nov 10, 2010 at 4:10 AM, Fabio Miranda <[email protected]>wrote: > > Hello, > > Browsing a single setup instance on web port 50070, click on "browse > filesystem" and got this error: > > HTTP ERROR: 500n must be positive > RequestURI=/nn_browsedfscontent.jspCaused > by:java.lang.IllegalArgumentException: n must be positive > at java.util.Random.nextInt(Random.java:250) > at > org.apache.hadoop.net.NetworkTopology.chooseRandom(NetworkTopology.java:540) > at > org.apache.hadoop.net.NetworkTopology.chooseRandom(NetworkTopology.java:508) > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getRandomDatanode(FSNamesystem.java:3411) > at > org.apache.hadoop.hdfs.server.namenode.NamenodeJspHelper.redirectToRandomDataNode(NamenodeJspHelper.java:288) > at > org.apache.hadoop.hdfs.server.namenode.nn_005fbrowsedfscontent_jsp._jspService(nn_005fbrowsedfscontent_jsp.java:74) > at > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1124) > at > org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:767) > at > org.mortbay.jetty.servlet.ServletHandler$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) > > Powered by Jetty:// > > what could be the cause ? > > thanks, >
