Are you able to create the directory manually in the DataNode Machine? #mkdirs /state/partition2/hadoop/dfs/tmp
Regards, Uma ----- Original Message ----- From: "Peng, Wei" <[email protected]> Date: Wednesday, September 21, 2011 9:44 am Subject: RE: java.io.IOException: Incorrect data format To: [email protected] > I modified edits so that hadoop namenode is restarted, however, I > couldnot 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 > > > > > > > > >
