Rorr:Operation category READ is not supported in state standy
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异常来源，集群更新后再eclipse中不能访问hdfs中文件异常如；Rorr:Operation category READ is not supported in state standy
解决方案：1.更新mapreduce中制定的cdh装在包如图
本人采用的利用 第三方文件传输平台简写FZ将cdh从Linux考到window下。
二：查看新的hdfs端口；Linux如图：
[root@sdzn-cdh01 parcels]# hdfs haadmin -transitionToActive --forcemanual nn1
三：在eclipse中的cdh中修改端口如图：
四：刷新上图右上角NewCDH5，重启eclipse即可！
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