[HIVE-13616] Investigate renaming a table without invalidating the column stats

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.1.0
• Component/s: Metastore
• Assignee: Aihua Xu
• Reporter: Aihua Xu
• Created: 26/Apr/16 17:53
• Updated: 21/Jun/16 15:10
• Resolved: 20/May/16 13:28

Description

Right now when we rename a table, we clear the column stats rather than updating it (HIVE-9720) since ObjectStore uses DN to talk to DB. Investigate the possibility that if we can achieve updating the stats without rescanning the whole table.

Issue Links

• links to: Code review

Sub-Tasks

• Add an interface to RawStore to support updating database/table names to the existing column stats: Open
• Investigate replacing a table column(s) without invalidating the column stats: Open