Hi Tariq, im not getting the right start..
On Thu, Aug 9, 2012 at 7:59 PM, Mohammad Tariq <donta...@gmail.com> wrote: > Hello Rahul, > > That's great. That's the best way to learn(I am doing the same :) > ). Since the installation part is over, I would suggest to get > yourself familiar with Hdfs and MapReduce first. Try to do basic > filesystem operations using the Hdfs API and run the wordcount > program, if you haven't done it yet. Then move ahead. > > Regards, > Mohammad Tariq > > > On Thu, Aug 9, 2012 at 5:20 PM, rahul p <rahulpoolancha...@gmail.com> > wrote: > > Hi Tariq, > > > > I am also new to Hadoop trying to learn my self can anyone help me on the > > same. > > i have installed CDH3. > > > > > > > > On Thu, Aug 9, 2012 at 6:21 PM, Mohammad Tariq <donta...@gmail.com> > wrote: > >> > >> Hello Anand, > >> > >> Is there any specific reason behind not using ssh?? > >> > >> Regards, > >> Mohammad Tariq > >> > >> > >> On Thu, Aug 9, 2012 at 3:46 PM, anand sharma <anand2sha...@gmail.com> > >> wrote: > >> > 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 > >> > ************************************************************/ > >> > > >> > > > > > >
