I can connect with "beeline -u jdbc:hive2://" [20:28 hadoop@Cavin-Y7000 hive]$ beeline -u jdbc:hive2:// SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/usr/local/hive/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/hdfs/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory] Connecting to jdbc:hive2:// 20/10/24 20:30:27 [main]: WARN conf.HiveConf: HiveConf of name hive.server2.connection.host does not exist Hive Session ID = 4977083b-4d07-4ff0-930f-7afb9e214933 20/10/24 20:30:28 [main]: WARN session.SessionState: METASTORE_FILTER_HOOK will be ignored, since hive.security.authorization.manager is set to instance of HiveAuthorizerFactory. 20/10/24 20:30:29 [main]: WARN metastore.ObjectStore: datanucleus.autoStartMechanismMode is set to unsupported value null . Setting it to value: ignored 20/10/24 20:30:30 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:30 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:30 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:30 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:30 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:30 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:31 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:31 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:31 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:31 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:31 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored 20/10/24 20:30:31 [main]: WARN DataNucleus.MetaData: Metadata has jdbc-type of null yet this is not valid. Ignored Connected to: Apache Hive (version 3.1.2) Driver: Hive JDBC (version 3.1.2) Transaction isolation: TRANSACTION_REPEATABLE_READ Beeline version 3.1.2 by Apache Hive 0: jdbc:hive2://>   but when I use "beeline -u jdbc:hive2://localhost:10000/default" I got this error:   [20:26 hadoop@Cavin-Y7000 hive]$ ./bin/beeline -u jdbc:hive2://localhost:10000 SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/usr/local/hive/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/usr/local/hadoop/share/hadoop/hdfs/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory] Connecting to jdbc:hive2://localhost:10000 20/10/24 20:28:38 [main]: WARN jdbc.HiveConnection: Failed to connect to localhost:10000 Unknown HS2 problem when communicating with Thrift server. Error: Could not open client transport with JDBC Uri: jdbc:hive2://localhost:10000: Invalid status 16 (state=08S01,code=0) Beeline version 3.1.2 by Apache Hive  it's very confusing for me for several days, and I cannot just use "jdbc:hive2://" within java code, it will give me the same error as using "beeline -u jdbc:hive2://localhost:10000/default" in command line ... View more