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https://issues.apache.org/jira/browse/SPARK-24010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16442146#comment-16442146
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Rui Li commented on SPARK-24010:
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Hi [~rxin], I think checking databaseExists is added in SPARK-14869. Do you
remember why we need to check whether DB exists? In {{HiveClientImpl::
tableExists}}, we're telling Hive not to throw exceptions, so there shouldn't
be exceptions if DB doesn't exist.
> Select from table needs read access on DB folder when storage based auth is
> enabled
> -----------------------------------------------------------------------------------
>
> Key: SPARK-24010
> URL: https://issues.apache.org/jira/browse/SPARK-24010
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Rui Li
> Priority: Major
>
> When HMS enables storage based authorization, SparkSQL requires read access
> on DB folder in order to select from a table. Such requirement doesn't seem
> necessary and is not required in Hive.
> The reason is when Analyzer tries to resolve a relation, it calls
> [SessionCatalog::databaseExists|https://github.com/apache/spark/blob/v2.1.0/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala#L469].
> This will call the metastore get_database API which will perform
> authorization check.
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