[FLINK-6574] Support nested catalogs in ExternalCatalog

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 1.3.0, 1.4.0
• Component/s: Table SQL / API
• Assignee: Haohui Mai
• Reporter: Haohui Mai
• Created: 12/May/17 22:26
• Updated: 08/Nov/18 20:05
• Resolved: 19/May/17 12:54

Description

We found out that the current external catalog requires three layers of references for any tables. For example, the SQL would look like the following when referencing external table:

SELECT * FROM catalog.db.table

It would be great to support only two layers of indirections which is closer to many of the deployment on Presto / Hive today.

SELECT * FROM db.table

Issue Links

• links to: GitHub Pull Request #3913