can you try delete this directory manually? Please check other process already running with this directory configured.
Regards, Uma ________________________________________ From: Vijayakumar Ramdoss [nellaivi...@gmail.com] Sent: Thursday, February 02, 2012 1:27 AM To: common-user@hadoop.apache.org Subject: ERROR namenode.NameNode: java.io.IOException: Cannot remove current directory: /var/lib/hadoop-0.20/cache/hadoop/dfs/name/current Hi All, I am trying to start the Namenode from my machine, Its throwing the error message, *ERROR namenode.NameNode: java.io.IOException: Cannot remove current directory: /var/lib/hadoop-0.20/cache/hadoop/dfs/name/current* Please refer the log information from here, vijayram@ubuntu:/etc$ hadoop namenode -format 12/02/01 14:07:48 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = ubuntu/127.0.1.1 STARTUP_MSG: args = [-format] STARTUP_MSG: version = 0.20.2-cdh3u3 STARTUP_MSG: build = file:///data/1/tmp/nightly_2012-01-26_09-40-25_3/hadoop-0.20-0.20.2+923.194-1~squeeze -r 03b655719d13929bd68bb2c2f9cee615b389cea9; compiled by 'root' on Thu Jan 26 11:54:44 PST 2012 ************************************************************/ Re-format filesystem in /var/lib/hadoop-0.20/cache/hadoop/dfs/name ? (Y or N) Y 12/02/01 14:08:10 INFO util.GSet: VM type = 64-bit 12/02/01 14:08:10 INFO util.GSet: 2% max memory = 17.77875 MB 12/02/01 14:08:10 INFO util.GSet: capacity = 2^21 = 2097152 entries 12/02/01 14:08:10 INFO util.GSet: recommended=2097152, actual=2097152 12/02/01 14:08:10 INFO security.UserGroupInformation: JAAS Configuration already set up for Hadoop, not re-installing. 12/02/01 14:08:10 INFO namenode.FSNamesystem: fsOwner=vijayram (auth:SIMPLE) 12/02/01 14:08:10 INFO namenode.FSNamesystem: supergroup=supergroup 12/02/01 14:08:10 INFO namenode.FSNamesystem: isPermissionEnabled=false 12/02/01 14:08:10 INFO namenode.FSNamesystem: dfs.block.invalidate.limit=1000 12/02/01 14:08:10 INFO namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s) 12/02/01 14:08:10 ERROR namenode.NameNode: java.io.IOException: Cannot remove current directory: /var/lib/hadoop-0.20/cache/hadoop/dfs/name/current at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.clearDirectory(Storage.java:292) at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1246) at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1265) at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1127) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1244) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1260) Thanks and Regards Vijay nellaivi...@gmail.com