An internal error occurred during: "Map/Reduce location status updater". java.lang.NullPointerExcept
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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:
Location name可以随便取,但是Host的参数需要跟core-site.xml配置文件的一致,port也在配置文件中。
该core-site.xml配置文件位置:hadoop安装目录/etc/hadoop/core-site.xml;
本人 配置文件:
自己参照一下吧。
本人的hadoop是2.5.2版的,安装的url如下:http://blog.csdn.net/petershusheng/article/details/51318760 ;暂时发现我使用new Hadoop location 时只是与这个配置文件有关。
其他博客介绍到job tracker的端口号在mapred-site.xml(我的没有配置这个选项,所以就填9001)
9001是job.tracker的端口号,9000是namenode的端口号。
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