Required field ‘serverProtocolVersion‘ is unset! User: root is not allowed to impersonate root

在使用hiveserver2连接hive时，遇到以下报错：

Beeline version 2.3.8 by Apache Hive
beeline> ! connect jdbc:hive2://cdh02:10000
Connecting to jdbc:hive2://cdh02:10000
Enter username for jdbc:hive2://cdh02:10000: root
Enter password for jdbc:hive2://cdh02:10000: *********
21/09/22 14:17:08 [main]: WARN jdbc.HiveConnection: Failed to connect to cdh02:10000
Error: Could not open client transport with JDBC Uri: jdbc:hive2://cdh02:10000: Failed to open new session: java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.authorize.AuthorizationException): User: root is not allowed to impersonate root (state=08S01,code=0)

如果启动不成功实现我们先检查以下两个文件配置是否正确

1）hadoop文件夹下面的core-site.xml中的内容

<property><name>hadoop.proxyuser.root.hosts</name><value>*</value>
</property>
<property><name>hadoop.proxyuser.root.groups</name><value>root</value>
</property>

2）hive文件夹下hive-site.xml中的内容

<property><name>javax.jdo.option.ConnectionURL</name><value>jdbc:mysql://localhost:3306/hive?createDatabaseIfNotExist=true</value><description>JDBC connect string for a JDBC metastore</description>
</property><property><name>javax.jdo.option.ConnectionDriverName</name><value>com.mysql.jdbc.Driver</value><description>Driver class name for a JDBC metastore</description>
</property><property><name>javax.jdo.option.ConnectionUserName</name><value>root</value><description>username to use against metastore database</description>
</property><property><name>javax.jdo.option.ConnectionPassword</name><value>xxxx</value><description>password to use against metastore database</description>
</property><property><name>hive.server2.thrift.port</name><value>10000</value>
</property><property><name>hive.server2.thrift.bind.host</name><value>localhost</value>
</property>

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Required field ‘serverProtocolVersion‘ is unset! User: root is not allowed to impersonate root

在使用hiveserver2连接hive时，遇到以下报错：

如果启动不成功实现我们先检查以下两个文件配置是否正确

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