I modified edits so that hadoop namenode is restarted, however, I could
not start my datanode. The datanode log shows
2011-09-20 21:07:10,068 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException:
Mkdirs failed to create /state/partition2/hadoop/dfs/tmp
at
org.apache.hadoop.hdfs.server.datanode.FSDataset$FSVolume.<init>(FSDatas
et.java:394)
at
org.apache.hadoop.hdfs.server.datanode.FSDataset.<init>(FSDataset.java:8
94)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.j
ava:318)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:232
)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.ja
va:1363)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(Data
Node.java:1318)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.
java:1326)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1448)
Wei
-----Original Message-----
From: Uma Maheswara Rao G 72686 [mailto:[email protected]]
Sent: Tuesday, September 20, 2011 9:10 PM
To: [email protected]
Subject: Re: java.io.IOException: Incorrect data format
Can you check what is the value for command 'df -h'in NN machine.
I think, one more possibility could be that while saving image itself it
would have been currupted.
To avoid such cases it has been already handled in trunk.For more
details
https://issues.apache.org/jira/browse/HDFS-1594
Regards,
Uma
----- Original Message -----
From: "Peng, Wei" <[email protected]>
Date: Wednesday, September 21, 2011 9:01 am
Subject: java.io.IOException: Incorrect data format
To: [email protected]
> I was not able to restart my name server because I the name server ran
> out of space. Then I adjusted dfs.datanode.du.reserved to 0, and used
> tune2fs -m to get some space, but I still could not restart the name
> node.
>
>
>
> I got the following error:
>
> java.io.IOException: Incorrect data format. logVersion is -18 but
> writables.length is 0.
>
>
>
> Anyone knows how to resolve this issue?
>
>
>
> Best,
>
> Wei
>
>
>
>
