Dfs and mapred are the directories created inside the /tmp/hadoop-<user-name> directory.
Thanks A -----Original Message----- From: Michael Bieniosek [mailto:[EMAIL PROTECTED] Sent: Friday, June 15, 2007 11:31 AM To: [email protected]; Phantom Subject: Re: Formatting the namenode In hadoop-default.xml you should find: <property> <name>hadoop.tmp.dir</name> <value>/tmp/hadoop-${user.name}</value> <description>A base for other temporary directories.</description> </property> <property> <name>dfs.name.dir</name> <value>${hadoop.tmp.dir}/dfs/name</value> <description>Determines where on the local filesystem the DFS name node should store the name table. If this is a comma-delimited list of directories then the name table is replicated in all of the directories, for redundancy. </description> </property> <property> <name>dfs.data.dir</name> <value>${hadoop.tmp.dir}/dfs/data</value> <description>Determines where on the local filesystem an DFS data node should store its blocks. If this is a comma-delimited list of directories, then data will be stored in all named directories, typically on different devices. Directories that do not exist are ignored. </description> </property> and some other properties that use the hadoop.tmp.dir prefix. What subdirectories did hadoop create inside /tmp/hadoop-${user.name}? -Michael On 6/14/07 10:39 PM, "Phantom" <[EMAIL PROTECTED]> wrote: > Hi > > When I format my namenode it does format the directory specified under > dfs.name.dir. However there is a folder under /tmp called hadoop-alakshman. > What is this for ? Will all blocks be stored under /var/hadoop somewhere. > Here is a copy of hadoop-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.name.dir</name> > <value>/var/hadoop</value> > </property> > > <property> > <name>fs.default.name</name> > <value>hdfs://hadoop001.sf2p.com:9000</value> > </property> > > <property> > <name>mapred.job.tracker</name> > <value>hadoop001.sf2p.com:50029</value> > </property> > > <property> > <name>mapred.job.tracker.info.port</name> > <value>50030</value> > </property> > > <property> > <name>mapred.child.java.opts</name> > <value>-Xmx1024M</value> > </property> > > <property> > <name>mapred.min.split.size</name> > <value>65536</value> > </property> > > <property> > <name>dfs.replication</name> > <value>3</value> > </property> > > </configuration>
