解决namenode格式化时报错，Call From n1/192.168.253.130 to s1:8485 failed on connection exception: java.net.Connec

解决namenode格式化时报错，Call From n1/192.168.253.130 to s1:8485 failed on connection exception: java.net.Connec
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原文地址：https://www.cnblogs.com/c-w20140301/p/10469315.html