HIVE2 Error: Failed to open new session: java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteExc

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LF4J: 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/default
Enter username for jdbc:hive2://localhost:10000/default: root
Enter password for jdbc:hive2://localhost:10000/default: ******

Error: 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=,code=0)

解决方案：在hadoop>etc>hadoop>core-site.xml 中添加如下部分，重启服务即可：

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

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