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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3337) Name-node fails to start because DatanodeInfo format changed.
Date Fri, 02 May 2008 00:37:55 GMT
Name-node fails to start because DatanodeInfo format changed.
-------------------------------------------------------------

                 Key: HADOOP-3337
                 URL: https://issues.apache.org/jira/browse/HADOOP-3337
             Project: Hadoop Core
          Issue Type: Bug
    Affects Versions: 0.18.0
            Reporter: Konstantin Shvachko
            Assignee: Tsz Wo (Nicholas), SZE
            Priority: Blocker
             Fix For: 0.18.0


HADOOP-3283 introduced a new field ipcPort in DatanodeInfo, which was not reflected in the
reading/writing file system image files.
Particularly, reading edits generated by the previous version of hadoop throws the following
exception:
{code}
08/05/02 00:02:50 ERROR dfs.NameNode: java.lang.IllegalArgumentException: No enum const class
org.apache.hadoop.dfs.DatanodeInfo$AdminStates.0?
/56.313
	at java.lang.Enum.valueOf(Enum.java:192)
	at org.apache.hadoop.io.WritableUtils.readEnum(WritableUtils.java:399)
	at org.apache.hadoop.dfs.DatanodeInfo.readFields(DatanodeInfo.java:318)
	at org.apache.hadoop.io.ArrayWritable.readFields(ArrayWritable.java:90)
	at org.apache.hadoop.dfs.FSEditLog.loadFSEdits(FSEditLog.java:499)
	at org.apache.hadoop.dfs.FSImage.loadFSEdits(FSImage.java:794)
	at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:664)
	at org.apache.hadoop.dfs.FSImage.recoverTransitionRead(FSImage.java:280)
	at org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:81)
	at org.apache.hadoop.dfs.FSNamesystem.initialize(FSNamesystem.java:276)
	at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:257)
	at org.apache.hadoop.dfs.NameNode.initialize(NameNode.java:133)
	at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:178)
	at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:164)
	at org.apache.hadoop.dfs.NameNode.createNameNode(NameNode.java:777)
	at org.apache.hadoop.dfs.NameNode.main(NameNode.java:786)
{code}
and startup fails.

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