spark運行的namenode是standby web的hdfs文件系統報錯:Operation category READ is not supported in state standby
1.如果是兩個namenode都是standby:原因是zookeeper沒有啓動
zkServer.sh start
2:Operation category READ is not supported in state standby是因爲你在的namenode是stanby
可以切換namenode 在active的namenode下的hadoop/sbin執行下面的語句
./hadoop-daemon.sh stop zkfc
./hadoop-daemon.sh start zkfc
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