[HIVE-20357] Introduce initOrUpgradeSchema option to schema tool

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Standalone Metastore
• Target Version/s: 4.0.0
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Daniel Dai
• Created: 09/Aug/18 18:12
• Updated: 17/Nov/22 08:55
• Resolved: 16/Aug/18 17:41

Description

Currently, schematool has two option: initSchema/upgradeSchema. User needs to use different command line for different action. However, from the schema version stored in db, we shall able to figure out if there's a need to init/upgrade, and choose the right action automatically.