[SPARK-35444] Improve createTable logic if table exists

• Type: Improvement
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: yikaifei
• Created: 19/May/21 11:48
• Updated: 19/May/21 12:09

Description

It should return directly if table exists and ignoreIfExists=true

 

current logic：

requireDbExists(db)
if (tableExists(newTableDefinition.identifier)) {
  if (!ignoreIfExists) {
    throw new TableAlreadyExistsException(db = db, table = table)
  }
} else if (validateLocation) {
  validateTableLocation(newTableDefinition)
}
externalCatalog.createTable(newTableDefinition, ignoreIfExists)

Issue Links

• links to: [Github] Pull Request #32589 (yikf)
• links to: [Github] Pull Request #32589 (yikf)