[HADOOP-507] Runtime exception in org.apache.hadoop.io.WritableFactories.newInstance when trying to startup namenode/datanode

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.6.0
• Component/s: util
• Assignee: Owen O'Malley
• Reporter: Arun Murthy
• Created: 05/Sep/06 17:08
• Updated: 08/Sep/06 21:20
• Resolved: 06/Sep/06 20:53

Description

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