我正在尝试进行Hadoop单节点安装。
我正在遵循this文章中的Hadoop安装说明。其中一步需要使用以下命令格式化Hadoop文件系统： hduser@dbserver:~/hadoop/conf$ /home/hduser/hadoop/bin/hadoop namenode -format
我正在遵循this文章中的Hadoop安装说明。其中一步需要使用以下命令格式化Hadoop文件系统： hduser@dbserver:~/hadoop/conf$ /home/hduser/hadoop/bin/hadoop namenode -format
hduser@dbserver:~/hadoop/conf$ /home/hduser/hadoop/bin/hadoop namenode -format
12/02/06 18:24:31 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = dbserver/127.0.1.1
STARTUP_MSG: args = [-format]
STARTUP_MSG: version = 0.20.203.0
STARTUP_MSG: build = http://svn.apache.org/repos/asf/hadoop/common/branches/branch- 0.20-security-203 -r 1099333; compiled by 'oom' on Wed May 4 07:57:50 PDT 2011
************************************************************/
[Fatal Error] core-site.xml:6:1: Content is not allowed in prolog.
12/02/06 18:24:31 FATAL conf.Configuration: error parsing conf file: org.xml.sax.SAXParseException: Content is not allowed in prolog.
12/02/06 18:24:31 ERROR namenode.NameNode: java.lang.RuntimeException: org.xml.sax.SAXParseException: Content is not allowed in prolog.
at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1237)
at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:1093)
at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:1037)
at org.apache.hadoop.conf.Configuration.set(Configuration.java:438)
at org.apache.hadoop.hdfs.server.namenode.NameNode.setStartupOption(NameNode.java:1124)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1141)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1162)
Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:249)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:180)
at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:1142)
... 6 more
12/02/06 18:24:31 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at dbserver/127.0.1.1
************************************************************/
当我尝试格式化时，出现了上述错误消息。
欢迎提出任何解决此问题的建议 :)。
这里是@zensen提供的core-site.xml文件供您参考。
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
n: conf/core-site.xml -->
<property>
<name>hadoop.tmp.dir</name>
<value>/app/hadoop/tmp</value>
<description>A base for other temporary directories.</description>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:54310</value>
<description>The name of the default file system. A URI whose
scheme and authority determine the FileSystem implementation. The
uri's scheme determines the config property (fs.SCHEME.impl) naming
the FileSystem implementation class. The uri's authority is used to
determine the host, port, etc. for a filesystem.</description>
</property><configuration>
~