"Schema already exists" when creating a table

• Key: DERBY-230
• Type: Bug
• Status: Closed
• Resolution: Fixed
• Priority: Minor
• Assignee: Øystein Grøvlen
• Reporter: Øystein Grøvlen
• Component/s: SQL
• Affects Version/s: 10.0.2.0, 10.0.2.1, 10.0.2.2, 10.1.1.0
• Fix Version/s: 10.1.1.0

Description

When running a multithreaded program where several threads in parallell create tables in a schema that is not explicitly created, one often get the following exception:

ERROR X0Y68: Schema 'TESTSCHEMA' already exists.
    at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:322)
    at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.duplicateDescriptorException(DataDictionaryImpl.java:1512)
    at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.addDescriptorNow(DataDictionaryImpl.java:1496)
    at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.addDescriptor(DataDictionaryImpl.java:1478)
    at org.apache.derby.impl.sql.execute.CreateSchemaConstantAction.executeConstantAction(CreateSchemaConstantAction.java:147)
    at org.apache.derby.impl.sql.execute.DDLConstantAction.getSchemaDescriptorForCreate(Unknown Source)
    at org.apache.derby.impl.sql.execute.CreateTableConstantAction.executeConstantAction(CreateTableConstantAction.java:213)
    at org.apache.derby.impl.sql.execute.MiscResultSet.open(MiscResultSet.java:56)
    at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:366)
    at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1108)
    at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:517)
    at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:475)
    at derbytest.Main$CreateTable.run(Main.java:42)
    at java.lang.Thread.run(Thread.java:595)

A program that reproduces this bug will be attached.