我的hadoop版本是0.20.203.0。在我的hadoop clulser上运行的namenode被关闭了。我检查了日志，只在辅助名称日志中找到了错误消息：
2014-09-27 22:18:54,930 WARN org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Checkpoint done. New Image Size: 29552383
2014-09-27 22:19:42,792 INFO org.mortbay.log: org.mortbay.io.nio.SelectorManager$SelectSet@8135daf JVM BUG(s) - injecting delay2 times
2014-09-27 22:19:42,792 INFO org.mortbay.log: org.mortbay.io.nio.SelectorManager$SelectSet@8135daf JVM BUG(s) - recreating selector 2 times, canceled keys 38 times
2014-09-27 23:18:55,508 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Number of transactions: 0 Total time for transactions(ms): 0Number of transactions batched in Syncs: 0 Number of syncs: 0 SyncTimes(ms): 0
2014-09-27 23:18:55,508 FATAL org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Fatal Error : All storage directories are inaccessible.
2014-09-27 23:18:55,509 INFO org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: SHUTDOWN_MSG:
我的一个数据节中还有其他错误消息：
2014-09-27 01:03:58,535 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration(10.75.6.51:50010, storageID=DS-532990984-10.75.6.51-50010-1343295370699, infoPort=50075, ipcPort=50020):DataXceiver
org.apache.hadoop.util.DiskChecker$DiskOutOfSpaceException: No space left on device
at org.apache.hadoop.hdfs.server.datanode.DataNode.checkDiskError(DataNode.java:770)
at org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receivePacket(BlockReceiver.java:475)
at org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receiveBlock(BlockReceiver.java:528)
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:397)
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:107)
at java.lang.Thread.run(Thread.java:662)
不确定这是否是namenode关闭问题的根本原因？
当我尝试重新启动namenode时出现了新的错误？
2014-09-28 11:25:06,202 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
java.io.IOException: Incorrect data format. logVersion is -31 but writables.length is 0.
at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:542)
at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:1009)
at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:827)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:365)
at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:97)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:379)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:353)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:254)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:434)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1153)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1162)
Is there anyone knows about it ? Is it possible to fix the imagne and editor files as I don't want to lose the data?