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MapReduce >> mail # user >> start JN error java.net.UnknownHostException


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Re: start JN error java.net.UnknownHostException
Your local hostname (/etc/hostname, /etc/sysconfig/network, etc.) is
using a short name, "CHBM220", which isn't understood by the DNS or by
/etc/hosts. Therefore, the UnknownHostException. Change the machine
hostname to an FQDN too, such as CHBM220.benchmark.com, which the DNS
does understand.

On Wed, Aug 21, 2013 at 11:05 AM, ch huang <[EMAIL PROTECTED]> wrote:
> i set all node domain in DNS,
>
> chbm220.benchmark.com 192.168.10.220
> chbm221.benchmark.com 192.168.10.221
> chbm222.benchmark.com 192.168.10.222
> chbm223.benchmark.com 192.168.10.223
> chbm224.benchmark.com 192.168.10.224
>
> i do not know why,any one can help?
>
> ************************************************************/
> 2013-08-21 13:28:25,687 INFO
> org.apache.hadoop.hdfs.qjournal.server.JournalNode: registered UNIX signal
> handlers for [TERM, HUP, INT]
> 2013-08-21 13:28:25,857 INFO org.apache.hadoop.metrics2.impl.MetricsConfig:
> loaded properties from hadoop-metrics2.properties
> 2013-08-21 13:28:26,009 ERROR
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Error getting localhost
> name. Using 'localhost'...
> java.net.UnknownHostException: CHBM220: CHBM220
>         at java.net.InetAddress.getLocalHost(InetAddress.java:1360)
>         at
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl.getHostname(MetricsSystemImpl.java:496)
>         at
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl.configureSystem(MetricsSystemImpl.java:435)
>         at
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl.configure(MetricsSystemImpl.java:431)
>         at
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl.start(MetricsSystemImpl.java:180)
>         at
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl.init(MetricsSystemImpl.java:156)
>         at
> org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.init(DefaultMetricsSystem.java:54)
>         at
> org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.initialize(DefaultMetricsSystem.java:50)
>         at
> org.apache.hadoop.hdfs.qjournal.server.JournalNode.start(JournalNode.java:134)
>         at
> org.apache.hadoop.hdfs.qjournal.server.JournalNode.run(JournalNode.java:122)
>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
>         at
> org.apache.hadoop.hdfs.qjournal.server.JournalNode.main(JournalNode.java:235)

--
Harsh J