[HADOOP-201] hadoop dfs -report throws exception

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.2.0
• Fix Version/s: 0.2.1

Environment

linux, jdk 1.5

• Assignee: Doug Cutting
• Reporter: Johan Oskarsson
• Created: 08/May/06 18:21
• Updated: 08/Jul/09 16:41
• Resolved: 09/May/06 01:23

Description

Running hadoop dfs -report throws the lovely exception below.
Changing org.apache.hadoop.dfs.DatanodeInfo back to being a public class solves the problem.

~/hadoop$ bin/hadoop dfs -report
060508 104801 parsing file:/home/hadoop/hadoop/conf/hadoop-default.xml
060508 104801 parsing file:/home/hadoop/hadoop/conf/hadoop-site.xml
060508 104801 No FS indicated, using default:xxx:9000
060508 104801 Client connection to 10.0.0.12:9000: starting
Total raw bytes: 2763338170368 (2573.55 Gb)
Used raw bytes: 1548564473694 (1442.21 Gb)
% used: 56.03%

Total effective bytes: 145953744375 (135.93 Gb)
Effective replication multiplier: 10.609967427182013
-------------------------------------------------
060508 104801 Client connection to 10.0.0.12:9000 caught: java.lang.RuntimeException: java.lang.IllegalAccessException: Class org.apache.hadoop.io.WritableFactories can not access a member of class org.apache.hadoop.dfs.DatanodeInfo 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.DatanodeInfo 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.io.ObjectWritable.readFields(ObjectWritable.java:60)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:170)
Caused by: java.lang.IllegalAccessException: Class org.apache.hadoop.io.WritableFactories can not access a member of class org.apache.hadoop.dfs.DatanodeInfo 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
060508 104801 Client connection to 10.0.0.12:9000: closing