错误1.
Error: Could not open client transport with JDBC Uri: jdbc:hive2://192.168.136.128:10000/mydb/: 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)
j解决 ：更改hadoop core-site.xml 加入
<property>
<name>hadoop.proxyuser.hadoop.hosts</name>
<value>*</value>
</property>
<property>
<name>hadoop.proxyuser.hadoop.groups</name>
<value>hadoop</value>
</property>
错误2.******保证 hadoop集群启动 ，并且 hive所在节点 处于active状态
执行命令
hdfs dfs -chmod -R 777 /tmp
hdfs dfs -chmod -R 777 /user/hive
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