几个因为hadoop配置文件不当造成的错误

192.168.1.20: Exception in thread "main" java.lang.IllegalArgumentException

192.168.1.20: at java.net.URI.create(URI.java:841)

192.168.1.20: at org.apache.hadoop.fs.FileSystem.getDefaultUri(FileSystem.java:132)

192.168.1.20: at org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:244)

192.168.1.20: at org.apache.hadoop.hdfs.server.namenode.NameNode.getServiceAddress(NameNode.java:236)

192.168.1.20: at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:194)

192.168.1.20: at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:150)

192.168.1.20: at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:676)

192.168.1.20: Caused by: java.net.URISyntaxException: Illegal character in authority at index 7: hdfs://192.168.1.20:9000

192.168.1.20: at java.net.URI$Parser.fail(URI.java:2810)

The reason is in core-site.xml hdfs://master:9000 </value>多了一个空格。

[hadoop@Master bin]$ start-all.sh

Warning: $HADOOP_HOME is deprecated.

starting namenode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-namenode-Master.Hadoop.out

192.168.1.23: starting datanode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-datanode-Slave3.Hadoop.out

192.168.1.21: starting datanode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-datanode-Slave1.Hadoop.out

192.168.1.22: starting datanode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-datanode-Slave2.Hadoop.out

192.168.1.21: [Fatal Error] core-site.xml:24:1: Content is not allowed in trailing section.

192.168.1.20: starting secondarynamenode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-secondarynamenode-Master.Hadoop.out

starting jobtracker, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-jobtracker-Master.Hadoop.out

192.168.1.23: starting tasktracker, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-Slave3.Hadoop.out

192.168.1.22: starting tasktracker, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-Slave2.Hadoop.out

192.168.1.21: starting tasktracker, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-Slave1.Hadoop.out

192.168.1.21: [Fatal Error] core-site.xml:24:1: Content is not allowed in trailing section.

core-site.xml 后边有空格或者空行

[hadoop@Master bin]$ start-all.sh

Warning: $HADOOP_HOME is deprecated.

starting namenode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-namenode-Master.Hadoop.out

192.168.1.23: starting datanode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-datanode-Slave3.Hadoop.out

192.168.1.21: starting datanode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-datanode-Slave1.Hadoop.out

192.168.1.22: starting datanode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-datanode-Slave2.Hadoop.out

192.168.1.20: starting secondarynamenode, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-secondarynamenode-Master.Hadoop.out

starting jobtracker, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-jobtracker-Master.Hadoop.out

192.168.1.22: starting tasktracker, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-Slave2.Hadoop.out

192.168.1.23: starting tasktracker, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-Slave3.Hadoop.out

192.168.1.21: starting tasktracker, logging to /usr/hadoop/libexec/../logs/hadoop-hadoop-tasktracker-Slave1.Hadoop.out

[hadoop@Master bin]$ cd

[hadoop@Master ~]$ ll /usr/hadoop/tmp

total 4

drwxrwxr-x 4 hadoop hadoop 4096 Oct 29 13:31 dfs

succeed in Master!

BUT not open MapReduce in Slaves

Last login: Tue Oct 29 11:26:27 2013 from superserver.home

[hadoop@Slave3 ~]$ ll /usr/hadoop/tmp/

total 4

drwxrwxr-x 3 hadoop hadoop 4096 Oct 29 13:31 dfs

[hadoop@Slave3 ~]$

Problable Solution:

The reason is in mapred-site.xml http://192.168.1.20:9000 </value>多了一个空格