Hi,
We are trying to set up a cluster (starting with 2 machines) using the
new 0.20.1 version.
On the master machine, just after the server starts, the name node
dies off with the following exception:
2009-10-13 01:22:24,740 ERROR
org.apache.hadoop.hdfs.server.namenode.NameNode: java.io.IOException:
Incomplete HDFS URI, no host: hdfs://master_hadoop
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize
(DistributedFileSystem.java:78)
at org.apache.hadoop.fs.FileSystem.createFileSystem
(FileSystem.java:1373)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:
66)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:
1385)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:191)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95)
at org.apache.hadoop.fs.Trash.<init>(Trash.java:62)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.startTrashEmptier
(NameNode.java:208)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize
(NameNode.java:204)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>
(NameNode.java:279)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode
(NameNode.java:956)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main
(NameNode.java:965)
Can anyone help ? Also can anyone send across example configuration
files for 0.20.1 if they are different than we are using ?
The detail log file is attached along with.
The configuration files are as follows:
MASTER CONFIG
------ conf/masters -------
master_hadoop
------ conf/slaves -------
master_hadoop
slave_hadoop
------ core-site.xml -------
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://master_hadoop</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/opt/hadoop-0.20.1/tmp</value>
</property>
------ hdfs-site.xml -------
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
------ mapred-site.xml -------
<property>
<name>mapred.job.tracker</name>
<value>tejas_hadoop:9001</value>
</property>
SLAVE CONFIG
------ core-site.xml -------
<property>
<name>hadoop.tmp.dir</name>
<value>/opt/hadoop-0.20.1/tmp/</value>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://master_hadoop</value>
</property>
------ hdfs-site.xml -------
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
------ mapred-site.xml -------
<property>
<name>mapred.job.tracker</name>
<value>tejas_hadoop:9001</value>
</property>
Regards,
Tejas Lagvankar
[email protected]
www.umbc.edu/~tej2
