Hi Everyone,
I have been using hadoop for some time and now I would like to start and
stop it from Java. To do so, firstly, I have tried to run NameNode.java
from my IDE but get the following error:
/************************************************************///
//13/09/30 08:51:59 INFO impl.MetricsConfig: loaded properties from
hadoop-metrics2.properties//
//13/09/30 08:51:59 INFO impl.MetricsSourceAdapter: MBean for source
MetricsSystem,sub=Stats registered.//
//13/09/30 08:51:59 INFO impl.MetricsSystemImpl: Scheduled snapshot
period at 10 second(s).//
//13/09/30 08:51:59 INFO impl.MetricsSystemImpl: NameNode metrics system
started//
//13/09/30 08:51:59 ERROR namenode.NameNode:
java.lang.IllegalArgumentException: Does not contain a valid host:port
authority: file://///
// at
org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:164)//
// at
org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:212)//
// at
org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:244)//
// at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:280)//
// at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)//
// at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)//
// at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1491)//
// at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)//
// at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)//
// at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)//
// at java.lang.reflect.Method.invoke(Method.java:606)//
// at
com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)//
//
//13/09/30 08:51:59 INFO namenode.NameNode: SHUTDOWN_MSG: //
///************************************************************//
/
Most probably, it tries to read the configurations from some files such
as core-site.xml, mapred-site.xml and hdfs-site.xml. I have placed those
files into many different directories but still get the same error. The
content of these configuration files are as follows:
--------------------------------------------------
*core-site.xml:*
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:8020</value>
</property>
</configuration>
*hdfs-site.xml*
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
</configuration>
*mapred-site.xml:*
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>localhost:9000</value>
</property>
</configuration>
*masters:*
localhost
*slaves:*
localhost
--------------------------------------------------
Kind Regards,
Furkan Bicak.
