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hadoop异常:Map/Reduce location status updater”.

原创 作者:xiaoyan5686670 时间:2016-09-06 22:06:25 0 删除 编辑
hadoop异常:An internal error occurred during: “Map/Reduce location status updater”. 
java.lang.NullPointerException; 
原因:在new Hadoop location时配置不正确,本人正确配置: 


DFS  master : 的端口为:
/opt/hadoop-2.6.2/etc/hadoop/core-site.xml
<property>
  <name>fs.defaultFS</name>
  <value>hdfs://qxy1</value>    ---默认端口为8020  
  <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>

MR的端口为:
<property>
  <name>mapreduce.jobhistory.address</name>
  <value>qxy1:10020</value>
  <description>MapReduce JobHistory Server IPC host:port</description>
</property>

USER NAME: hadoop 为hadoop安装的用户。
主机名的IP为namenode的节点IP.           






 
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