Apache Spark commented on SPARK-23379:

User 'liufengdb' has created a pull request for this issue:

> remove redundant metastore access if the current database name is the same
> --------------------------------------------------------------------------
>                 Key: SPARK-23379
>                 URL: https://issues.apache.org/jira/browse/SPARK-23379
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.3.1
>            Reporter: Feng Liu
>            Priority: Major
> We should be able to reduce one metastore access if the target database name 
> is as same as the current database:
> https://github.com/apache/spark/blob/master/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala#L295

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