2019-06-21
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958
Operation category READ
问题:Operation category READ is not supported in state standby
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException): Operation category READ is not supported in state standby
此时请登录Hadoop的管理界面查看运行节点是否处于standby
如登录地址是:
http://192.168.50.221:50070/dfshealth.html#tab-overview
如果是,则不可在处于StandBy机器运行spark计算,因为该台机器为备分机器






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