[PHOENIX-2791] Support append only schema declaration

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.8.0
• Labels: argus
• Assignee: Thomas D'Silva
• Reporter: James R. Taylor
• Created: 23/Mar/16 05:14
• Updated: 11/Aug/16 08:29
• Resolved: 11/May/16 21:14

Description

If we know in advance that columns will only be added to but never removed from a schema, we can prevent the RPC from the client to the server when the client already has all columns declared in the CREATE TABLE/VIEW IF NOT EXISTS. To enable this, we can add an APPEND_ONLY_SCHEMA boolean flag to SYSTEM.CATALOG. Or another potential name would be IMMUTABLE_SCHEMA to match IMMUTABLE_ROWS?

Issue Links

• relates to: PHOENIX-2968 Minimize RPCs for ALTER statement over APPEND_ONLY_SCHEMA