查看namenode RPC响应时间
curl -s http://xxx.xxx.xxx.xxx:50070/jmx|egrep "RpcQueueTimeAvgTime|RpcProcessingTimeAvgTime"查看namenode RPC响应时间
https://www.hechunyu.com/archives/1698216928957
curl -s http://xxx.xxx.xxx.xxx:50070/jmx|egrep "RpcQueueTimeAvgTime|RpcProcessingTimeAvgTime"