hadoop - Hadoop安装问题Ubuntu 18.04:hadoop namenode -format错误

Question

我正在尝试安装hadoop。

我正在this文章中获取hadoop的安装说明。我需要做的步骤之一是使用以下命令格式化hadoop文件系统:

root @ ben-Aspire-E5-575G:〜＃hadoop namenode -format

我收到以下错误

2018-10-12 00:08:16,884 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
2018-10-12 00:08:16,896 INFO namenode.NameNode: createNameNode [-format]
2018-10-12 00:08:17,024 ERROR conf.Configuration: error parsing conf hdfs-site.xml
com.ctc.wstx.exc.WstxEOFException: Unexpected EOF; was expecting a close tag for element <xml>
 at [row,col,system-id]: [49,0,"file:/usr/local/hadoop/etc/hadoop/hdfs-site.xml"]
	at com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:687)
	at com.ctc.wstx.sr.BasicStreamReader.throwUnexpectedEOF(BasicStreamReader.java:5608)
	at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2802)
	at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1123)
	at org.apache.hadoop.conf.Configuration$Parser.parseNext(Configuration.java:3257)
	at org.apache.hadoop.conf.Configuration$Parser.parse(Configuration.java:3063)
	at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:2986)
	at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2926)
	at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2806)
	at org.apache.hadoop.conf.Configuration.set(Configuration.java:1366)
	at org.apache.hadoop.conf.Configuration.set(Configuration.java:1338)
	at org.apache.hadoop.conf.Configuration.setBoolean(Configuration.java:1679)
	at org.apache.hadoop.util.GenericOptionsParser.processGeneralOptions(GenericOptionsParser.java:339)
	at org.apache.hadoop.util.GenericOptionsParser.parseGeneralOptions(GenericOptionsParser.java:572)
	at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:174)
	at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:156)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1587)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1710)
2018-10-12 00:08:17,031 ERROR namenode.NameNode: Failed to start namenode.
java.lang.RuntimeException: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF; was expecting a close tag for element <xml>
 at [row,col,system-id]: [49,0,"file:/usr/local/hadoop/etc/hadoop/hdfs-site.xml"]
	at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:3003)
	at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2926)
	at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2806)
	at org.apache.hadoop.conf.Configuration.set(Configuration.java:1366)
	at org.apache.hadoop.conf.Configuration.set(Configuration.java:1338)
	at org.apache.hadoop.conf.Configuration.setBoolean(Configuration.java:1679)
	at org.apache.hadoop.util.GenericOptionsParser.processGeneralOptions(GenericOptionsParser.java:339)
	at org.apache.hadoop.util.GenericOptionsParser.parseGeneralOptions(GenericOptionsParser.java:572)
	at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:174)
	at org.apache.hadoop.util.GenericOptionsParser.<init>(GenericOptionsParser.java:156)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1587)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1710)
Caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF; was expecting a close tag for element <xml>
 at [row,col,system-id]: [49,0,"file:/usr/local/hadoop/etc/hadoop/hdfs-site.xml"]
	at com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:687)
	at com.ctc.wstx.sr.BasicStreamReader.throwUnexpectedEOF(BasicStreamReader.java:5608)
	at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2802)
	at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1123)
	at org.apache.hadoop.conf.Configuration$Parser.parseNext(Configuration.java:3257)
	at org.apache.hadoop.conf.Configuration$Parser.parse(Configuration.java:3063)
	at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:2986)
	... 11 more
2018-10-12 00:08:17,035 INFO util.ExitUtil: Exiting with status 1: java.lang.RuntimeException: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF; was expecting a close tag for element <xml>
 at [row,col,system-id]: [49,0,"file:/usr/local/hadoop/etc/hadoop/hdfs-site.xml"]
2018-10-12 00:08:17,043 INFO namenode.NameNode: SHUTDOWN_MSG: 
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at ben-Aspire-E5-575G/127.0.1.1
************************************************************/

hdfs-site.xml文件在这里

<xml version="1.0" encoding="UTF-8">
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!--
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License. See accompanying LICENSE file.
-->

<!-- Put site-specific property overrides in this file. -->

<configuration>

        <property>

                <name>dfs.replication</name>

                        <value>1</value>

                        <description>Default block replication.The actual number of replications can be specified when the file is created. The default is used if replication is not specified in create t$

        </property>

        <property>

                <name>dfs.namenode.name.dir</name>

                <value>file:/usr/local/hadoop_store/hdfs/namenode</value>

        </property>

        <property>

                <name>dfs.datanode.data.dir</name>

                <value>file:/usr/local/hadoop_store/hdfs/datanode</value>

        </property>

</configuration>

Answer 1

您在提供的文件中的最终配置标记之外缺少了</description>和最终的</xml>。

如错误所示，缺少标签。

描述是可选的，因此可以随意删除该标签