Your procedure is right: 1. Copy edit.tmp from secondary to edit on primary 2. Copy srcimage from secondary to fsimage on primary 3. remove edits.new on primary 4. restart cluster, put in Safemode, fsck /
However, the above steps are not foolproof because the transactions that occured between the time when the last checkpoint was taken by the secondary and when the disk became full are lost. This could cause some blocks to go missing too, because the last checkpoint might refer to blocks that are no longer present. If the fsck does not report any missing blocks, then you are good to go. Thanks, dhruba -----Original Message----- From: Jason Venner [mailto:[EMAIL PROTECTED] Sent: Thursday, March 13, 2008 1:37 PM To: core-user@hadoop.apache.org Subject: Question about recovering from a corrupted namenode 0.16.0 The namenode ran out of disk space and on restart was throwing the error at the end of this message. We copied in the edit.tmp to edit from the secondary, and copied in srcimage to fsimage, and removed edit.new and our file system started up and /appears/ to be intact. What is the proper procedure, we didn't find any details on the wiki. Namenode error: 2008-03-13 13:19:32,493 ERROR org.apache.hadoop.dfs.NameNode: java.io.EOFException at java.io.DataInputStream.readFully(DataInputStream.java:180) at org.apache.hadoop.io.UTF8.readFields(UTF8.java:106) at org.apache.hadoop.io.ArrayWritable.readFields(ArrayWritable.java:90) at org.apache.hadoop.dfs.FSEditLog.loadFSEdits(FSEditLog.java:507) at org.apache.hadoop.dfs.FSImage.loadFSEdits(FSImage.java:744) at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:624) at org.apache.hadoop.dfs.FSImage.recoverTransitionRead(FSImage.java:222) at org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:79) at org.apache.hadoop.dfs.FSNamesystem.initialize(FSNamesystem.java:254) at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:235) at org.apache.hadoop.dfs.NameNode.initialize(NameNode.java:130) at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:175) at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:161) at org.apache.hadoop.dfs.NameNode.createNameNode(NameNode.java:843) at org.apache.hadoop.dfs.NameNode.main(NameNode.java:852) -- Jason Venner Attributor - Publish with Confidence <http://www.attributor.com/> Attributor is hiring Hadoop Wranglers, contact if interested
