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https://issues.apache.org/jira/browse/HIVE-26180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HIVE-26180:
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    Labels: pull-request-available  (was: )

> Change MySQLConnectorProvider driver from mariadb to mysql
> ----------------------------------------------------------
>
>                 Key: HIVE-26180
>                 URL: https://issues.apache.org/jira/browse/HIVE-26180
>             Project: Hive
>          Issue Type: Bug
>          Components: StorageHandler
>    Affects Versions: 4.0.0-alpha-1, 4.0.0-alpha-2
>            Reporter: zhangbutao
>            Assignee: zhangbutao
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I test with example  {_}dataconnector_mysql.q{_}. When I execute  _show 
> tables_ from remote database, it failed with WARN log:
>  
> {code:java}
> 2022-04-27T16:52:34,696  WARN [Metastore-Handler-Pool: Thread-48] 
> jdbc.AbstractJDBCConnectorProvider: Driver class not found in 
> classpath:org.mariadb.jdbc.Driver
> 2022-04-27T16:52:34,698  WARN [Metastore-Handler-Pool: Thread-48] 
> metastore.HMSHandler: Unexpected exception while getting table(s) in remote 
> database db_mysql
> org.apache.hadoop.hive.metastore.api.MetaException: Could not instantiate a 
> provider for database db_mysql{code}
>  
> And so I add _mariadb-java-client-2.5.0.jar_ to hive lib, It is ok to show 
> tables from remote database, but this leads to failure on native database:
> {code:java}
> 2022-04-27T17:01:38,763 ERROR [Metastore-Handler-Pool: Thread-43] 
> Datastore.Schema: An exception was thrown while adding/validating class(es) : 
> Table "columns_v2" has been specified with a primary-key to include column 
> "CD_ID" but this column is not found in the table. Please check your 
> <primary-key> column specification.
> Table "columns_v2" has been specified with a primary-key to include column 
> "CD_ID" but this column is not found in the table. Please check your 
> <primary-key> column specification.
> org.datanucleus.exceptions.NucleusUserException: Table "columns_v2" has been 
> specified with a primary-key to include column "CD_ID" but this column is not 
> found in the table. Please check your <primary-key> column specification.
>         at 
> org.datanucleus.store.rdbms.table.ElementContainerTable.applyUserPrimaryKeySpecification(ElementContainerTable.java:225)
>         at 
> org.datanucleus.store.rdbms.table.CollectionTable.initialize(CollectionTable.java:235)
>         at 
> org.datanucleus.store.rdbms.RDBMSStoreManager$ClassAdder.initializeClassTables(RDBMSStoreManager.java:3318)
>         at 
> org.datanucleus.store.rdbms.RDBMSStoreManager$ClassAdder.run(RDBMSStoreManager.java:2938)
>         at 
> org.datanucleus.store.rdbms.AbstractSchemaTransaction.execute(AbstractSchemaTransaction.java:118)
>  {code}
>  
> If I change MySQLConnectorProvider driver from mariadb to mysql,  It's good 
> to both remote mysql database and native database.
>  



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