Hadoop启动失败：mapred-site.xml配置文件解析错误

错误日志 #

at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2924)
Caused by: com.ctc.wstx.exc.WstxParsingException: 意外的关闭标签</name>; 预期为</nafme>.
 at [行,列,系统标识]: [39,40,"file:/opt/module/hadoop-3.1.3/etc/hadoop/mapred-site.xml"]
        at com.ctc.wstx.sr.StreamScanner.constructWfcException(StreamScanner.java:621)
        at com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:491)
        at com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:475)
        at com.ctc.wstx.sr.BasicStreamReader.reportWrongEndElem(BasicStreamReader.java:3365)
        at com.ctc.wstx.sr.BasicStreamReader.readEndElem(BasicStreamReader.java:3292)
        at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2911)
        at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1123)
        at org.apache.hadoop.conf.Configuration$Parser.parseNext(Configuration.java:3320)
        at org.apache.hadoop.conf.Configuration$Parser.parse(Configuration.java:3114)
        at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:3007)
        ... 14 more
2022-12-02 13:21:18,536 INFO org.apache.hadoop.util.ExitUtil: 退出状态码1: java.lang.RuntimeException: com.ctc.wstx.exc.WstxParsingException: 意外的关闭标签</name>; 预期为</nafme>.
 at [行,列,系统标识]: [39,40,"file:/opt/module/hadoop-3.1.3/etc/hadoop/mapred-site.xml"]
2022-12-02 13:21:18,551 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: 关闭消息: 
/************************************************************
SHUTDOWN_MSG: 在hadoop162/192.168.10.162关闭DataNode
************************************************************/
2022-12-02 13:21:18,597 ERROR org.apache.hadoop.conf.Configuration: 解析配置文件mapred-site.xml出错
com.ctc.wstx.exc.WstxParsingException: 意外的关闭标签</name>; 预期为</nafme>.
 at [行,列,系统标识]: [39,40,"file:/opt/module/hadoop-3.1.3/etc/hadoop/mapred-site.xml"]
        at com.ctc.wstx.sr.StreamScanner.constructWfcException(StreamScanner.java:621)
        at com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:491)
        at com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:475)
        at com.ctc.wstx.sr.BasicStreamReader.reportWrongEndElem(BasicStreamReader.java:3365)
        at com.ctc.wstx.sr.BasicStreamReader.readEndElem(BasicStreamReader.java:3292)
        at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2911)
        at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1123)
        at org.apache.hadoop.conf.Configuration$Parser.parseNext(Configuration.java:3320)
        at org.apache.hadoop.conf.Configuration$Parser.parse(Configuration.java:3114)
        at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:3007)
        at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2968)
        at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2848)
        at org.apache.hadoop.conf.Configuration.get(Configuration.java:1200)
        at org.apache.hadoop.conf.Configuration.getTimeDuration(Configuration.java:1812)
        at org.apache.hadoop.conf.Configuration.getTimeDuration(Configuration.java:1789)
        at org.apache.hadoop.util.ShutdownHookManager.getShutdownTimeout(ShutdownHookManager.java:183)
        at org.apache.hadoop.util.ShutdownHookManager.shutdownExecutor(ShutdownHookManager.java:145)
        at org.apache.hadoop.util.ShutdownHookManager.access$300(ShutdownHookManager.java:65)
        at org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:102)

节点进程信息 #

/opt/module/hadoop-3.1.3/logs » xcall                                                               atguigu@hadoop162
========== hadoop162 =========
3642 Jps
========== hadoop163 =========
3047 NodeManager
2603 DataNode
2893 ResourceManager
3503 Jps
========== hadoop164 =========
1191 DataNode
1368 NodeManager
1597 Jps
/opt/module/hadoop-3.1.3/logs »                                                                     atguigu@hadoop162

问题定位 #

核心问题：mapred-site.xml文件第39行第40列存在XML标签不匹配——预期关闭标签为</nafme>，实际使用了</name>，导致Hadoop配置解析失败，启动终止。

解决步骤 #

1. 打开配置文件：vi /opt/module/hadoop-3.1.3/etc/hadoop/mapred-site.xml
2. 定位到第39行，检查对应起始标签：
   • 若起始标签是<nafme>，则将关闭标签改为</nafme>；
   • 若起始标签是<name>，则修正起始标签为<name>，确保前后标签一致。
3. 保存文件后，重新启动Hadoop集群：start-all.sh（或对应集群启动命令）

内容的提问来源于stack exchange，提问作者Jiangchao Yang