hadoop搭建时候遇到的两个问题及解答

1)ERROR org.apache.hadoop.mapred.TaskTracker: Caught exception: java.net.UnknownHostException: unknown host

 

把未知host机器名字在/etc/hosts中加入映射

 

2)tasktracker running as process 13046. Stop it first.

 

把报这个错的host的的这个进程kill掉,然后重启hadoop

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