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https://issues.apache.org/jira/browse/SPARK-30104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-30104:
-----------------------------------
Assignee: Terry Kim
> global temp db name can be used as a table name under v2 catalog
> ----------------------------------------------------------------
>
> Key: SPARK-30104
> URL: https://issues.apache.org/jira/browse/SPARK-30104
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Terry Kim
> Assignee: Terry Kim
> Priority: Major
>
> Currently, 'global_temp' can be used in certain commands (CREATE) but not in
> others (DESCRIBE) because catalog look up logic only considers the first
> element of the multi-part name and always uses the session catalog if it is
> set to 'global_temp'.
> For example:
> {code:java}
> // Assume "spark.sql.globalTempDatabase" is set to "global_temp".
> sql(s"CREATE TABLE testcat.t (id bigint, data string) USING foo")
> sql(s"CREATE TABLE testcat.global_temp (id bigint, data string) USING foo")
> sql("USE testcat")
> sql(s"DESCRIBE TABLE t").show
> +---------------+---------+-------+
> | col_name|data_type|comment|
> +---------------+---------+-------+
> | id| bigint| |
> | data| string| |
> | | | |
> | # Partitioning| | |
> |Not partitioned| | |
> +---------------+---------+-------+
> sql(s"DESCRIBE TABLE global_temp").show
> org.apache.spark.sql.AnalysisException: Table not found: global_temp;;
> 'DescribeTable 'UnresolvedV2Relation [global_temp],
> org.apache.spark.sql.connector.InMemoryTableSessionCatalog@2f1af64f,
> `global_temp`, false
> at
> org.apache.spark.sql.catalyst.analysis.CheckAnalysis.failAnalysis(CheckAnalysis.scala:47)
> at
> org.apache.spark.sql.catalyst.analysis.CheckAnalysis.failAnalysis$(CheckAnalysis.scala:46)
> at
> org.apache.spark.sql.catalyst.analysis.Analyzer.failAnalysis(Analyzer.scala:122)
> {code}
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