Hi Guys:
I am just installation the hadoop 0.21.0 in a single node cluster.
I encounter the following error when I run bin/hadoop namenode -format
10/12/08 16:27:22 ERROR namenode.NameNode:
java.io.IOException: Cannot create directory
/your/path/to/hadoop/tmp/dir/hadoop-hadoop/dfs/name/current
at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.clearDirectory(Storage.java:312)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1425)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1444)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1242)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1348)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1368)
Below is my core-site.xml
<configuration>
<!-- In: conf/core-site.xml -->
<property>
<name>hadoop.tmp.dir</name>
<value>/your/path/to/hadoop/tmp/dir/hadoop-${user.name}</value>
<description>A base for other temporary directories.</description>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:54310</value>
<description>The name of the default file system. A URI whose
scheme and authority determine the FileSystem implementation. The
uri's scheme determines the config property (fs.SCHEME.impl) naming
the FileSystem implementation class. The uri's authority is used to
determine the host, port, etc. for a filesystem.</description>
</property>
</configuration>
Below is my hdfs-site.xml
*<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<!-- In: conf/hdfs-site.xml -->
<property>
<name>dfs.replication</name>
<value>1</value>
<description>Default block replication.
The actual number of replications can be specified when the file is
created.
The default is used if replication is not specified in create time.
</description>
</property>
</configuration>
below is my mapred-site.xml:
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<!-- In: conf/mapred-site.xml -->
<property>
<name>mapred.job.tracker</name>
<value>localhost:54311</value>
<description>The host and port that the MapReduce job tracker runs
at. If "local", then jobs are run in-process as a single map
and reduce task.
</description>
</property>
</configuration>
Thanks.
Richard
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