Execute by SQL

select * from cities limit 10;

report errors

FAILED: SemanticException Unable to determine if hdfs://localhost:9000/user/hive/warehouse/cities is encrypted:
 org.apache.hadoop.hive.ql.metadata.HiveException: java.net.ConnectException: Call From bigdata/192.168.224.130 to 
localhost:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  
http://wiki.apache.org/hadoop/ConnectionRefused

The reason is that the metadata information of hive is stored in DBS and SDS in MySQL. I modified the fs.xml of core site defaultFS，

Cause metadata mismatch.

primary

<configuration>
   <property>
        <name>fs.defaultFS</name>
        <value>hdfs://bigdata:9000</value>
    </property>
 <property>

present

<configuration>
   <property>
        <name>fs.defaultFS</name>
        <value>hdfs://bigdata:9000</value>
    </property>
 <property>

So the solution is to modify

update DBS set DB_LOCATION_URI=REPLACE (DB_LOCATION_URI,'localhost:9000','bigdata:9000');
update SDS set LOCATION=REPLACE (LOCATION,'localhost:9000','bigdata:9000');