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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-217) IllegalAcessException when creating a Block object via WritableFactories
Date Sat, 13 May 2006 00:58:10 GMT
IllegalAcessException when creating a Block object via WritableFactories
------------------------------------------------------------------------

         Key: HADOOP-217
         URL: http://issues.apache.org/jira/browse/HADOOP-217
     Project: Hadoop
        Type: Bug

  Components: dfs  
    Versions: 0.3    
    Reporter: Hairong Kuang
 Assigned to: Hairong Kuang 
     Fix For: 0.3
 Attachments: access.patch

When I ran the dfs namenode, I received an error message listed below. Changing Block class
to be public will be able to fix the problem.

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"
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.ObjectWritable.readObject(ObjectWritable.java:226)
        at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:163)
        at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:211)
        at org.apache.hadoop.ipc.RPC$Invocation.readFields(RPC.java:88)
        at org.apache.hadoop.ipc.Server$Connection.run(Server.java:154)
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)
        ... 5 more


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