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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-507) Runtime exception in org.apache.hadoop.io.WritableFactories.newInstance when trying to startup namenode/datanode
Date Tue, 05 Sep 2006 17:30:24 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-507?page=comments#action_12432635 ] 
            
Arun C Murthy commented on HADOOP-507:
--------------------------------------

Works great for me Owen, thanks!

> Runtime exception in org.apache.hadoop.io.WritableFactories.newInstance when trying to
startup namenode/datanode
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-507
>                 URL: http://issues.apache.org/jira/browse/HADOOP-507
>             Project: Hadoop
>          Issue Type: Bug
>          Components: util
>    Affects Versions: 0.5.0
>            Reporter: Arun C Murthy
>         Assigned To: Owen O'Malley
>         Attachments: write-factory.patch
>
>
> Here's the logs:
> arun@neo ~/dev/java/latest-hadoop/trunk $ cat /home/arun/dev/java/hadoop-0.4.0/build/libhdfs/tests/logs/hadoop-arun-namenode-neo.out
> 2006-09-05 22:18:39,756 INFO  conf.Configuration (Configuration.java:loadResource(496))
- parsing file:/home/arun/dev/java/hadoop-0.4.0/src/c++/libhdfs/tests/conf/hadoop-default.xml
> 2006-09-05 22:18:39,804 INFO  conf.Configuration (Configuration.java:loadResource(496))
- parsing file:/home/arun/dev/java/hadoop-0.4.0/src/c++/libhdfs/tests/conf/hadoop-site.xml
> 2006-09-05 22:18:39,918 INFO  util.Credential (FileResource.java:<clinit>(60))
- Checking Resource aliases
> 2006-09-05 22:18:39,935 INFO  http.HttpServer (HttpServer.java:doStart(729)) - Version
Jetty/5.1.4
> 2006-09-05 22:18:40,366 INFO  util.Container (Container.java:start(74)) - Started org.mortbay.jetty.servlet.WebApplicationHandler@1171b26
> 2006-09-05 22:18:40,478 INFO  util.Container (Container.java:start(74)) - Started WebApplicationContext[/,/]
> 2006-09-05 22:18:40,478 INFO  util.Container (Container.java:start(74)) - Started HttpContext[/logs,/logs]
> 2006-09-05 22:18:40,479 INFO  util.Container (Container.java:start(74)) - Started HttpContext[/static,/static]
> 2006-09-05 22:18:40,485 INFO  http.SocketListener (SocketListener.java:start(204)) -
Started SocketListener on 0.0.0.0:50070
> 2006-09-05 22:18:40,487 INFO  util.Container (Container.java:start(74)) - Started org.mortbay.jetty.Server@1b09468
> Exception in thread "main" java.lang.RuntimeException: java.lang.IllegalAccessException:
Class org.apache.hadoop.io.WritableFactories can not access a member of class org.apache.hadoop.dfs.Block
with modifiers "public"
>         at org.apache.hadoop.io.WritableFactories.newInstance(WritableFactories.java:49)
>         at org.apache.hadoop.io.ArrayWritable.readFields(ArrayWritable.java:81)
>         at org.apache.hadoop.dfs.FSEditLog.loadFSEdits(FSEditLog.java:134)
>         at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:157)
>         at org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:317)
>         at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:199)
>         at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:132)
>         at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:123)
>         at org.apache.hadoop.dfs.NameNode.main(NameNode.java:543)
> Caused by: java.lang.IllegalAccessException: Class org.apache.hadoop.io.WritableFactories
can not access a member of class org.apache.hadoop.dfs.Block with modifiers "public"
>         at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:65)
>         at java.lang.Class.newInstance0(Class.java:344)
>         at java.lang.Class.newInstance(Class.java:303)
>         at org.apache.hadoop.io.WritableFactories.newInstance(WritableFactories.java:45)
>         ... 8 more
> Steps to reproduce:
> 1. Start namenode/datanode
> 2. Run hdfs_test program (part of libhdfs)
> 3. Stop namenode/datanode
> 4. goto step 1

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