具有主机名的Hadoop安装失败

Question

i try to install hadoop single node,

when i try using localhost and my ip address on my configuration,my hadoop running well. but when i change IP address to hostname, i got error.NameNode and JobTracker can't run.

What should i do ?

this is my config

1.core-site.xml

<property>
    <name>hadoop.tmp.dir</name>
    <value>/usr/lib/hadoop-0.20/tmp</value>
</property>

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


2.hdfs-site.xml

<property>
    <name>dfs.replication</name>
    <value>1</value> //menujukkan jumlah cluster
</property>

3.mapred-site.xml

<property>
    <name>mapred.job.tracker</name>
    <value>localhost:8021</value>
<property>

<property>
    <name>mapred.local.dir</name>
    <value>/home/disk1/mapred/local</value>
</property>

This is my /etc/hosts

127.0.0.1  localhost.localdomain localhost cloudera_master
10.0.2.15  cloudera_master

I just change localhost to hostname "cloudera_master",but it's failed. I have try add host to my /etc/hosts but it still failed

Help me please,

Answer 1

Isn't the problem of core-site.xml? <value> hdfs://localhost </value>

Try this one. <value>hdfs://localhost:8020</value>