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MapReduce >> mail # user >> namenode instantiation error


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Re: namenode instantiation error
Hi Anand,

      Have you tried any other Hadoop distribution or version also??In
that case first remove the older one and start fresh.

Regards,
    Mohammad Tariq
On Thu, Aug 9, 2012 at 5:29 PM, Mohammad Tariq <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]>
>>> 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)
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB