Hi, i am just learning the Hadoop and i am setting the development environment with CDH3 pseudo distributed mode without any ssh cofiguration in CentOS 6.2 . i can run the sample programs as usual but when i try and run namenode this is the error it logs...
[hive@localhost ~]$ hadoop namenode 12/08/09 20:56:57 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = localhost.localdomain/127.0.0.1 STARTUP_MSG: args = [] STARTUP_MSG: version = 0.20.2-cdh3u4 STARTUP_MSG: build = file:///data/1/tmp/topdir/BUILD/hadoop-0.20.2-cdh3u4 -r 214dd731e3bdb687cb55988d3f47dd9e248c5690; compiled by 'root' on Mon May 7 14:01:59 PDT 2012 ************************************************************/ 12/08/09 20:56:57 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=NameNode, sessionId=null 12/08/09 20:56:57 INFO metrics.NameNodeMetrics: Initializing NameNodeMeterics using context object:org.apache.hadoop.metrics.spi.NoEmitMetricsContext 12/08/09 20:56:57 INFO util.GSet: VM type = 64-bit 12/08/09 20:56:57 INFO util.GSet: 2% max memory = 17.77875 MB 12/08/09 20:56:57 INFO util.GSet: capacity = 2^21 = 2097152 entries 12/08/09 20:56:57 INFO util.GSet: recommended=2097152, actual=2097152 12/08/09 20:56:57 INFO namenode.FSNamesystem: fsOwner=hive (auth:SIMPLE) 12/08/09 20:56:57 INFO namenode.FSNamesystem: supergroup=supergroup 12/08/09 20:56:57 INFO namenode.FSNamesystem: isPermissionEnabled=false 12/08/09 20:56:57 INFO namenode.FSNamesystem: dfs.block.invalidate.limit=1000 12/08/09 20:56:57 INFO namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s) 12/08/09 20:56:57 INFO metrics.FSNamesystemMetrics: Initializing FSNamesystemMetrics using context object:org.apache.hadoop.metrics.spi.NoEmitMetricsContext 12/08/09 20:56:57 ERROR namenode.FSNamesystem: FSNamesystem initialization failed. java.io.FileNotFoundException: /var/lib/hadoop-0.20/cache/hadoop/dfs/name/in_use.lock (Permission denied) at java.io.RandomAccessFile.open(Native Method) at java.io.RandomAccessFile.<init>(RandomAccessFile.java:216) at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.tryLock(Storage.java:614) at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:591) at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:449) at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:304) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:110) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:372) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:335) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:271) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:467) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1330) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1339) 12/08/09 20:56:57 ERROR namenode.NameNode: java.io.FileNotFoundException: /var/lib/hadoop-0.20/cache/hadoop/dfs/name/in_use.lock (Permission denied) at java.io.RandomAccessFile.open(Native Method) at java.io.RandomAccessFile.<init>(RandomAccessFile.java:216) at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.tryLock(Storage.java:614) at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:591) at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:449) at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:304) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:110) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:372) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:335) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:271) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:467) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1330) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1339) 12/08/09 20:56:57 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at localhost.localdomain/127.0.0.1 ************************************************************/
