java.net.UnknownHostException: unknown host: master
在本地寫好的mapreduce程序想要鏈接遠程服務器進行執行，但在執行時： 鏈接遠程服務器時出現一下異常：java.net.UnknownHostException: unknown host: master 說明本地客戶端不認識遠程服務器的master，或者不認識遠程服務器上的slave1/slave2...... 解決方法： 在本地客戶端配置hosts vi /etc/
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