CalvinKirs commented on issue #4389:
URL:
https://github.com/apache/incubator-dolphinscheduler/issues/4389#issuecomment-755094311
Call From dwdt03/10.10.101.22 to dwdt03:8020 failed on connection
exception: java.net.ConnectException: 拒绝连接; For more details see:
http://wiki.apache.org/hadoop/ConnectionRefused
btw,please use english
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