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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2567) When 0 DNs are available, show a proper error when trying to browse DFS via web UI
Date Sun, 20 Nov 2011 13:13:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13153794#comment-13153794
] 

Hudson commented on HDFS-2567:
------------------------------

Integrated in Hadoop-Mapreduce-0.23-Build #99 (See [https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Build/99/])
    HDFS-2567. svn merge -c 1204131 from trunk

eli : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1204132
Files : 
* /hadoop/common/branches/branch-0.23
* /hadoop/common/branches/branch-0.23/hadoop-common-project
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-auth
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/docs
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/main/java
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/src/test/core
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeJspHelper.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/native
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/datanode
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/secondary
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/test/hdfs
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/.gitignore
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/bin
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/conf
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/c++
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib/block_forensics
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib/build-contrib.xml
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib/build.xml
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib/data_join
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib/eclipse-plugin
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib/index
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib/streaming
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/contrib/vaidya
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/examples
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/fs
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/hdfs
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/io/FileBench.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/io/TestSequenceFileMergeProgress.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/ipc
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/security/authorize/TestServiceLevelAuthorization.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/test/MapredTestDriver.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/src/webapps/job

                
> When 0 DNs are available, show a proper error when trying to browse DFS via web UI
> ----------------------------------------------------------------------------------
>
>                 Key: HDFS-2567
>                 URL: https://issues.apache.org/jira/browse/HDFS-2567
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Harsh J
>            Assignee: Harsh J
>             Fix For: 0.23.1
>
>         Attachments: HDFS-2567.patch, HDFS-2567.patch
>
>
> Trace:
> {code}
> HTTP ERROR 500
> Problem accessing /nn_browsedfscontent.jsp. Reason:
>     n must be positive
> Caused 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:556)
> 	at org.apache.hadoop.net.NetworkTopology.chooseRandom(NetworkTopology.java:524)
> 	at org.apache.hadoop.hdfs.server.namenode.NamenodeJspHelper.getRandomDatanode(NamenodeJspHelper.java:372)
> 	at org.apache.hadoop.hdfs.server.namenode.NamenodeJspHelper.redirectToRandomDataNode(NamenodeJspHelper.java:383)
> 	at org.apache.hadoop.hdfs.server.namenode.nn_005fbrowsedfscontent_jsp._jspService(nn_005fbrowsedfscontent_jsp.java:70)
> 	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
> 	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$CachedChain.doFilter(ServletHandler.java:1221)
> 	at org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:109)
> 	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> 	at org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:940)
> 	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}
> Steps I did to run into this:
> 1. Start a new NN, freshly formatted.
> 2. No DNs yet.
> 3. Visit the DFS browser link {{http://localhost:50070/nn_browsedfscontent.jsp}}
> 4. Above error shows itself
> 5. {{hdfs dfs -touchz afile}}
> 6. Re-visit, still shows the same issue.
> Perhaps its cause of no added DN so far.

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