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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