问题

   初始化hadoop文件系统出现错误。

./bin/hdfs namenode -format hba-hadoop

STARTUP_MSG:   java = 1.8.0_74
************************************************************/
19/12/06 14:58:10 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
19/12/06 14:58:10 ERROR conf.Configuration: error parsing conf hdfs-site.xml
com.ctc.wstx.exc.WstxParsingException: Unexpected close tag </slave>; expected </value>.
 at [row,col,system-id]: [34,34,"file:/usr/local/hadoop-2.10.0/etc/hadoop/hdfs-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.loadResource(Configuration.java:2796)
        at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2725)
        at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2605)
        at org.apache.hadoop.conf.Configuration.get(Configuration.java:1103)
        at org.apache.hadoop.conf.Configuration.getTimeDuration(Configuration.java:1690)
        at org.apache.hadoop.util.ShutdownHookManager.getShutdownTimeout(ShutdownHookManager.java:183)
        at org.apache.hadoop.util.ShutdownHookManager$HookEntry.<init>(ShutdownHookManager.java:206)
        at org.apache.hadoop.util.ShutdownHookManager.addShutdownHook(ShutdownHookManager.java:302)
        at org.apache.hadoop.util.StringUtils.startupShutdownMessage(StringUtils.java:738)
        at org.apache.hadoop.util.StringUtils.startupShutdownMessage(StringUtils.java:722)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1781)
19/12/06 14:58:10 ERROR namenode.NameNode: Failed to start namenode.
java.lang.RuntimeException: com.ctc.wstx.exc.WstxParsingException: Unexpected close tag </slave>; expected </value>.
 at [row,col,system-id]: [34,34,"file:/usr/local/hadoop-2.10.0/etc/hadoop/hdfs-site.xml"]
        at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:2963)
        at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2725)
        at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2605)
        at org.apache.hadoop.conf.Configuration.get(Configuration.java:1103)
        at org.apache.hadoop.conf.Configuration.getTimeDuration(Configuration.java:1690)
        at org.apache.hadoop.util.ShutdownHookManager.getShutdownTimeout(ShutdownHookManager.java:183)
        at org.apache.hadoop.util.ShutdownHookManager$HookEntry.<init>(ShutdownHookManager.java:206)
        at org.apache.hadoop.util.ShutdownHookManager.addShutdownHook(ShutdownHookManager.java:302)
        at org.apache.hadoop.util.StringUtils.startupShutdownMessage(StringUtils.java:738)
        at org.apache.hadoop.util.StringUtils.startupShutdownMessage(StringUtils.java:722)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1781)
Caused by: com.ctc.wstx.exc.WstxParsingException: Unexpected close tag </slave>; expected </value>.
 at [row,col,system-id]: [34,34,"file:/usr/local/hadoop-2.10.0/etc/hadoop/hdfs-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.loadResource(Configuration.java:2796)
        ... 10 more
19/12/06 14:58:10 INFO util.ExitUtil: Exiting with status 1: java.lang.RuntimeException: com.ctc.wstx.exc.WstxParsingException: Unexpected close tag </slave>; expected </value>.
 at [row,col,system-id]: [34,34,"file:/usr/local/hadoop-2.10.0/etc/hadoop/hdfs-site.xml"]
19/12/06 14:58:10 ERROR conf.Configuration: error parsing conf hdfs-site.xml
com.ctc.wstx.exc.WstxParsingException: Unexpected close tag </slave>; expected </value>.
 at [row,col,system-id]: [34,34,"file:/usr/local/hadoop-2.10.0/etc/hadoop/hdfs-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.loadResource(Configuration.java:2796)
        at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2725)
        at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2605)
        at org.apache.hadoop.conf.Configuration.get(Configuration.java:1103)
        at org.apache.hadoop.conf.Configuration.getTimeDuration(Configuration.java:1690)
        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)
Exception in thread "Thread-1" java.lang.RuntimeException: com.ctc.wstx.exc.WstxParsingException: Unexpected close tag </slave>; expected </value>.
 at [row,col,system-id]: [34,34,"file:/usr/local/hadoop-2.10.0/etc/hadoop/hdfs-site.xml"]
        at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:2963)
        at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2725)
        at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2605)
        at org.apache.hadoop.conf.Configuration.get(Configuration.java:1103)
        at org.apache.hadoop.conf.Configuration.getTimeDuration(Configuration.java:1690)
        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)
Caused by: com.ctc.wstx.exc.WstxParsingException: Unexpected close tag </slave>; expected </value>.
 at [row,col,system-id]: [34,34,"file:/usr/local/hadoop-2.10.0/etc/hadoop/hdfs-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.loadResource(Configuration.java:2796)
        ... 8 more
[root@hadoop-master hadoop-2.10.0]# 

解决

  按照提示仔细检查配置文件。