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Hadoop >> mail # general >> bin/hadoop namenode -format          IOException: Invalid argument


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Re: bin/hadoop namenode -format          IOException: Invalid argument
Is namenode running when you tried this operation? If so shutdown the namenode process and try it again.
On 3/23/10 11:19 AM, "Gary Yang" <[EMAIL PROTECTED]> wrote:

Hi All,

I got exception below. I followed the Quick Start for the Pseudo-Distributed Operation. I did what the quick start says. Can someone help?

cat conf/core-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>

  <property>
    <name>fs.default.name</name>
    <value>hdfs://localhost:9000</value>
  </property>

</configuration>
cat conf/hdfs-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>
  <property>
    <name>dfs.replication</name>
    <value>1</value>
  </property>
</configuration>
cat conf/mapred-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>
  <property>
    <name>mapred.job.tracker</name>
    <value>localhost:9001</value>
  </property>
</configuration>

Below are errors:
-bash-3.2# bin/hadoop namenode -format
10/03/23 11:54:54 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG:   host = Board2/192.168.0.185
STARTUP_MSG:   args = [-format]
STARTUP_MSG:   version = 0.20.2
STARTUP_MSG:   build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20 -r 911707; compiled by 'chrisdo' on Fri Feb 19 08:07:34 UTC 2010
************************************************************/
10/03/23 11:54:56 INFO namenode.FSNamesystem: fsOwner=root,root,bin,daemon,sys,adm,disk,wheel
10/03/23 11:54:56 INFO namenode.FSNamesystem: supergroup=supergroup
10/03/23 11:54:56 INFO namenode.FSNamesystem: isPermissionEnabled=true
10/03/23 11:54:56 INFO common.Storage: java.io.IOException: Invalid argument
        at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:900)
        at java.nio.channels.FileChannel.tryLock(FileChannel.java:974)
        at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.tryLock(Storage.java:527)
        at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:505)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1087)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1110)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:856)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:948)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:965)

10/03/23 11:54:56 ERROR namenode.NameNode: java.io.IOException: Invalid argument
        at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:900)
        at java.nio.channels.FileChannel.tryLock(FileChannel.java:974)
        at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.tryLock(Storage.java:527)
        at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:505)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1087)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1110)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:856)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:948)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:965)

10/03/23 11:54:56 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at Board2/192.168.0.185
************************************************************/
Thanks,
Gary

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