[jira] [Created] (SPARK-39547) V2SessionCatalog should not throw NoSuchDatabaseException in loadNamespaceMetadata

["Prashant Singh (Jira)" <ji...@apache.org>]

Prashant Singh created SPARK-39547:
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             Summary: V2SessionCatalog should not throw NoSuchDatabaseException in loadNamespaceMetadata
                 Key: SPARK-39547
                 URL: https://issues.apache.org/jira/browse/SPARK-39547
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.3.0
            Reporter: Prashant Singh


DROP NAMESPACE IF EXISTS

{table}

 

if a catalog doesn't overrides `namespaceExists` it by default uses `loadNamespaceMetadata` and in case a `db` not exists loadNamespaceMetadata throws a `NoSuchDatabaseException` which is not catched and we see failures even with `if exists` clause. One such use case we observed was in iceberg table a post test clean up was failing with `NoSuchDatabaseException` now.

 

Found {color:#000000}V2SessionCatalog `{color}{color:#00627a}loadNamespaceMetadata{color}{color:#000000}` {color}was also throwing the same unlike `{color:#000000}JDBCTableCatalog`{color}

ref a stack trace :
{quote}Database 'db' not found
org.apache.spark.sql.catalyst.analysis.NoSuchDatabaseException: Database 'db' not found
at org.apache.spark.sql.catalyst.catalog.SessionCatalog.requireDbExists(SessionCatalog.scala:219)
at org.apache.spark.sql.catalyst.catalog.SessionCatalog.getDatabaseMetadata(SessionCatalog.scala:284)
at org.apache.spark.sql.execution.datasources.v2.V2SessionCatalog.loadNamespaceMetadata(V2SessionCatalog.scala:247)
at org.apache.iceberg.spark.SparkSessionCatalog.loadNamespaceMetadata(SparkSessionCatalog.java:97)
at org.apache.spark.sql.connector.catalog.SupportsNamespaces.namespaceExists(SupportsNamespaces.java:98)
at org.apache.spark.sql.execution.datasources.v2.DropNamespaceExec.run(DropNamespaceExec.scala:40)
at org.apache.spark.sql.execution.datasources.v2.V2CommandExec.result$lzycompute(V2CommandExec.scala:43)
at org.apache.spark.sql.execution.datasources.v2.V2CommandExec.result(V2CommandExec.scala:43)
at org.apache.spark.sql.execution.datasources.v2.V2CommandExec.executeCollect(V2CommandExec.scala:49)
at org.apache.spark.sql.execution.QueryExecution$$anonfun$eagerlyExecuteCommands$1.$anonfun$applyOrElse$1(QueryExecution.scala:98)
{quote}



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