Retrying connect to server: 192.168.10.101/192.168.10.101:10020. Already tried 0 time(s)； retry poli

Retrying connect to server: 192.168.10.101/192.168.10.101:10020. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)

 

当所有的try都失败的时候，会报出这个异常。

Call From DESKTOP-7SD0IDV/192.168.10.1 to 192.168.10.101:10020 failed on connection exception: java.net.ConnectException: Connection refused: no further information; For more details see: 

一般遇到这个问题，那是因为你的historyserver没有开

在虚拟机命令行输入

mr-jobhistory-daemon.sh start historyserver  ,即可解决此异常。