I would suggest you to clean some space and try. Regards, Uma
----- Original Message ----- From: "Peng, Wei" <wei.p...@xerox.com> Date: Wednesday, September 21, 2011 10:03 am Subject: RE: RE: java.io.IOException: Incorrect data format To: common-user@hadoop.apache.org > Yes, I can. The datanode is not able to start after crashing without > enough HD space. > > Wei > > -----Original Message----- > From: Uma Maheswara Rao G 72686 [mailto:mahesw...@huawei.com] > Sent: Tuesday, September 20, 2011 9:30 PM > To: common-user@hadoop.apache.org > Subject: Re: RE: java.io.IOException: Incorrect data format > > > 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" <wei.p...@xerox.com> > Date: Wednesday, September 21, 2011 9:44 am > Subject: RE: java.io.IOException: Incorrect data format > To: common-user@hadoop.apache.org > > > 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:mahesw...@huawei.com] > > Sent: Tuesday, September 20, 2011 9:10 PM > > To: common-user@hadoop.apache.org > > 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" <wei.p...@xerox.com> > > Date: Wednesday, September 21, 2011 9:01 am > > Subject: java.io.IOException: Incorrect data format > > To: common-user@hadoop.apache.org > > > > > 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 > > > > > > > > > > > > > > >
