yyyStudyStudyStudy opened a new issue #4406:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/4406


   [ERROR] 2021-01-08 10:55:40.553 
org.apache.dolphinscheduler.api.service.DataSourceService:[433] - Could not 
establish connection to jdbc:hive2://10.0.4.78:10000/vfs_dw: Required field 
'client_protocol' is unset! Struct:TOpenSessionReq(client_protocol:null, 
configuration:{use:database=vfs_dw})
   java.sql.SQLException: Could not establish connection to 
jdbc:hive2://10.0.4.78:10000/vfs_dw: Required field 'client_protocol' is unset! 
Struct:TOpenSessionReq(client_protocol:null, 
configuration:{use:database=vfs_dw})
           at 
org.apache.hive.jdbc.HiveConnection.openSession(HiveConnection.java:601)
           at 
org.apache.hive.jdbc.HiveConnection.<init>(HiveConnection.java:172)
           at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:107)
           at java.sql.DriverManager.getConnection(DriverManager.java:664)
           at java.sql.DriverManager.getConnection(DriverManager.java:247)
           at 
org.apache.dolphinscheduler.api.service.DataSourceService.getConnection(DataSourceService.java:430)
           at 
org.apache.dolphinscheduler.api.service.DataSourceService.checkConnection(DataSourceService.java:448)
           at 
org.apache.dolphinscheduler.api.service.DataSourceService$$FastClassBySpringCGLIB$$8d6cb828.invoke(<generated>)
           at 
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
           at 
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684)
           at 
org.apache.dolphinscheduler.api.service.DataSourceService$$EnhancerBySpringCGLIB$$a93ee4fc.checkConnection(<generated>)
           at 
org.apache.dolphinscheduler.api.controller.DataSourceController.connectDataSource(DataSourceController.java:284)
           at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source)
           at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)


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