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https://issues.apache.org/jira/browse/HIVE-28460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhihua Deng updated HIVE-28460:
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Description: Upon ObjectStore initialization, we need to determine which
type of underlying db is by asking the connection the product name. It's a
waste of time and resource to do this, as long as we don't change the database
connection information, the db type shouldn't be changed, sometimes retrieving
the connection for the secondary connection pool(which size is 2) could be time
cost, which can lead to HiveMetastoreClient taking much time to connect to the
Metastore. (was: Upon ObjectStore initialization, we need to determine which
type of underlying db is by asking the connection the product name. It's a
waste of time and resource to do this, as long as we don't change the database
connection information, the db type shouldn't be changed, sometimes retrieving
the connection for the secondary connection pool(which size is 2) could be time
cost, which can lead to HiveMetastoreClient spending much time to connect to
the Metastore.)
> Determine the database type once the PersistenceManagerFactory created
> ----------------------------------------------------------------------
>
> Key: HIVE-28460
> URL: https://issues.apache.org/jira/browse/HIVE-28460
> Project: Hive
> Issue Type: Improvement
> Reporter: Zhihua Deng
> Assignee: Zhihua Deng
> Priority: Major
> Labels: pull-request-available
>
> Upon ObjectStore initialization, we need to determine which type of
> underlying db is by asking the connection the product name. It's a waste of
> time and resource to do this, as long as we don't change the database
> connection information, the db type shouldn't be changed, sometimes
> retrieving the connection for the secondary connection pool(which size is 2)
> could be time cost, which can lead to HiveMetastoreClient taking much time to
> connect to the Metastore.
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