[IMPALA-1651] CREATE TABLE LIKE should not copy caching directives of the source table.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 2.1
• Fix Version/s: Impala 2.5.0
• Component/s: Catalog
• Labels: ramp-up
• Target Version: Impala 2.5.0
• Assignee: Bharath Vissapragada
• Reporter: Alexander Behm
• Created: 09/Jan/15 18:05
• Updated: 04/Jan/17 23:58
• Resolved: 28/Jan/16 14:04

Description

Currently, CREATE TABLE LIKE 'blindly' copies the source table, including the table's and partitions' parameter maps. The parameter maps may contain information about caching directives that do not apply to the new table.
I can see two acceptable behaviors (choose one) if the source table is cached:
1. the new table is also cached; we need to issue new caching directives and store them in the params of the new table as appropriate
2. the new table is not cached and must be cached explicitly